Gasoline vapor tends to collect ______.A.above the floor plates of the bilgesB.above the carburetor levelC.at the lowest point of the bilge areasD.at no particular level
Gasoline vapor tends to collect ______.
A.above the floor plates of the bilges
B.above the carburetor level
C.at the lowest point of the bilge areas
D.at no particular level
相关考题：
When checking zinc plates in the refrigerating system condenser, you shouldA.paint and insulate the plates to prevent corrosionB.renew the plates at each inspectionC.replace the zincs if deteriorated by 50%D.file the plates to change the negative value
Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?A.Baffle plates that have been bent during prior removalB.Leaks m the cooler tube nestC.Operating the engine while maintaining a high sea water outlet temperatureD.A punctured sea water strainer supplying cooling water to the heat exchanger
A safe fuel system must ______.A.prevent engine overheatingB.have proper air/gasoline fuel mixture ratioC.be liquid- and vapor-tightD.supply sufficient air to the intake manifold
The diurnal variation of pressure is most noticeable ______.A.above the polar circlesB.in a low pressure areaC.during periods of low temperaturesD.in the doldrums
Buckler plates are ______．A.Triangular-shaped plates connecting the bull chain to the topping liftB.Metal plates secured over the tops of the hawsepipesC.Faired shell plates with curvature in two directionsD.Sheets of dunnage used to prevent heavy cargo from buckling the deck plates
共用题干A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The con-tinents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate,hot magma（岩浆）flows up to fill the space. New crust （地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long moun-tain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colli- ding plates carry continents , then the layers of rock in the overriding plate crumple（变皱）and fold .A plate that carried what is now India collided with the southern edge of the plate that carriedEurope and most of Asia. This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The SanAndreas Fault in California is a good example of this type of movement. This passage is mostly about______.A: effects of movements of the earth's platesB: different types of continentsC: the Marianas TrenchD: transform faults
共用题干A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The con-tinents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate,hot magma（岩浆）flows up to fill the space. New crust （地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long moun-tain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colli- ding plates carry continents , then the layers of rock in the overriding plate crumple（变皱）and fold .A plate that carried what is now India collided with the southern edge of the plate that carriedEurope and most of Asia. This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The SanAndreas Fault in California is a good example of this type of movement. To explain the effect of trenches,the writer gives the example of______.A: the sea floor in the Atlantic OceanB: the Himalayan MountainsC: EuropeD: India
共用题干A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The con-tinents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate,hot magma（岩浆）flows up to fill the space. New crust （地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long moun-tain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colli- ding plates carry continents , then the layers of rock in the overriding plate crumple（变皱）and fold .A plate that carried what is now India collided with the southern edge of the plate that carriedEurope and most of Asia. This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The SanAndreas Fault in California is a good example of this type of movement. The word"stable"(paragraph 1)means______.A: "a place for horses,,B: "calm and easygoing"C: "steady or firm,,D: "a collection of animals"
共用题干A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The con-tinents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate,hot magma（岩浆）flows up to fill the space. New crust （地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long moun-tain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colli- ding plates carry continents , then the layers of rock in the overriding plate crumple（变皱）and fold .A plate that carried what is now India collided with the southern edge of the plate that carriedEurope and most of Asia. This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The SanAndreas Fault in California is a good example of this type of movement. The San Andreas Fault is an example of______.A: a severe earthquakeB: a California rock formationC: two plates moving apartD: two plates sliding past each other
共用题干A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The con-tinents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate,hot magma（岩浆）flows up to fill the space. New crust （地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long moun-tain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colli- ding plates carry continents , then the layers of rock in the overriding plate crumple（变皱）and fold .A plate that carried what is now India collided with the southern edge of the plate that carriedEurope and most of Asia. This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The SanAndreas Fault in California is a good example of this type of movement. According to the passage,the earth is______.A: always changingB: becoming smallerC: moving fasterD: getting hotter
共用题干第二篇A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The continents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate , hot magma（岩浆）flows up to fill the space. New crust（地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long mountain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other.As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches.The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet.This is the lowest point on the ocean floor. If the leading edges of the two colliding plates carry continents,then the layers of rock in the overriding plate crumple（变皱）and fold. A plate that carried what is now India collided with the southern edge of the plate that carried Europe and most of Asia.This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other.Severe earthquakes can occur. The San Andreas Fault in California is a good example of this type of movement.To explain the effect of trenches,the writer gives the example ofA:the sea floor in the Atlantic Ocean.B:the Himalayan Mountains.C:Europe.D:India.
共用题干第二篇A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The continents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate , hot magma（岩浆）flows up to fill the space. New crust（地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long mountain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other.As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches.The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet.This is the lowest point on the ocean floor. If the leading edges of the two colliding plates carry continents,then the layers of rock in the overriding plate crumple（变皱）and fold. A plate that carried what is now India collided with the southern edge of the plate that carried Europe and most of Asia.This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other.Severe earthquakes can occur. The San Andreas Fault in California is a good example of this type of movement.This passage is mostly aboutA:effects of movements of the earth's plates.B:different types of continents.C:the Marianas Trench.D:transform faults.
共用题干第二篇A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.The earth has an outer shell of rigid pieces called tectonic plates（地壳构造板块）.The plates include both ocean floor and dry land.Some have whole continents on top of them. The continents on top of the plates are just going along for a slow ride,moving only about four inches per year. But even this small movement causes three types of big interactions.One type is ocean ridges.These ridges develop in places where two plates are moving away from each other. As the plates separate , hot magma（岩浆）flows up to fill the space. New crust（地壳）builds up on the plate boundaries and causes ocean ridges. These ridges form long mountain ranges,which only rise above the ocean surface in a few places.Another type of reaction-trenches-occurs between two plates that are moving toward each other.As the plates meet,one bends downward and plunges underneath the other. This forms deep ocean trenches.The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet.This is the lowest point on the ocean floor. If the leading edges of the two colliding plates carry continents,then the layers of rock in the overriding plate crumple（变皱）and fold. A plate that carried what is now India collided with the southern edge of the plate that carried Europe and most of Asia.This caused the Himalayas,the world's highest mountains.The third reaction is transform faults（转换断层）.These faults occur where two plates that are traveling in opposite directions slide past each other.Severe earthquakes can occur. The San Andreas Fault in California is a good example of this type of movement.The San Andreas Fault is an example ofA:a severe earthquake.B:a California rock formation.C:two plates moving apart.D:two plates sliding past each other.
单选题The shut off valve at the gasoline tank which can be operated from outside the tank space （）.Acontrols the amount of gasoline to the engineBshuts off the gasoline supply at the tankCis used if the gasoline tank leaksDAll of the above
单选题Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?（）ABaffle plates that have been bent during prior removalBLeaks in the cooler tube nestCOperating the engine while maintaining a high sea water outlet temperatureDA punctured sea water strainer supplying cooling water to the heat exchanger
单选题Aboard ship，vertical flat plates running transversely and connecting the vertical keel to the margin plates are called（）.AfloorsBintercostalsCgirdersDstringers
单选题Gasoline vapor tends to collect（）.Aabove the floor plates of the bilgesBabove the carburetor levelCat the lowest point of the bilge areasDat no particular level
单选题Air that may enter a refrigeration plant tends to collect in the （）.Aupper part of the receiverBupper part of the condenserCdown stream end of the cooling coilDoutlet end of the condenser
单选题According to the text, incomplete combustion is more likely to occur with gasoline than with an alternative fuel because ______.Athe combustion of gasoline releases photochemical active hydrocarbonsBthe combustion of gasoline embraces an intricate set of reactionsCgasoline molecules have a simple molecular structureDgasoline is composed of small molecules
单选题A safe fuel system must（）.Aprevent engine overheatingBhave proper air/gasoline fuel mixture ratioCbe liquid- and vapor-tightDsupply sufficient air to the intake manifold
单选题When fueling has been completed（）.Athe fuel tank fill pipe should be left open to allow vapors to vent from the tankBthe engine should be started immediately to prevent vapor lock in the fuel lineCall hatches should be opened and all compartments should be ventilatedDopen the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment
单选题Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?（）AAt the designed operating temperature, the liquid refrigerant charge has changed to a vaporBThe liquid refrigerant tends to collect at the bellows or diaphragm and reduces the valve sensitivityCThe sensing bulb is empty of liquid refrigerant charge at the designed operating temperatureDThe sensing bulb is never emptied of liquid refrigerant under normal operating conditions
单选题Each drilling unit equipped with helicopter fuel storage tanks must have the tanks installed as far as practicable from the（）.Alanding area and sources of vapor ignitionBmain deckCengine roomDdrill floor
单选题According to the relevant regulation, lifeboat should be powered by（）.Ainboard diesel engineBoutboard diesel engineCoutboard gasoline engineDinboard gasoline engine
单选题Buckler plates are（）.Atriangular-shaped plates connecting the bull chain to the topping liftBmetal plates secured over the tops of the hawsepipesCfaired shell plates with curvature in two directionsDsheets of dunnage used to prevent heavy cargo from buckling the deck plates