You are at sea in an inflatable liferaft．In high latitudes，the greatest danger is ______．A.asphyxiation due to keeping the canopy closedB.hypothermia caused by cold temperatureC.collapse of the raft due to cold temperaturesD.starvation
You are at sea in an inflatable liferaft．In high latitudes，the greatest danger is ______．
A.asphyxiation due to keeping the canopy closed
B.hypothermia caused by cold temperature
C.collapse of the raft due to cold temperatures
D.starvation
相关考题：
AThe undersea world is very beautiful． Now more and more people want to dive in the water to find the secrets there． Scuba diving is a new sport today． It can take you into a wonder-ful undersea world．You will find many strange animals in the sea． Some are as large as a school bus． Many sea animals give out light in the dark and some have sharp teeth．During the day， there is enough light． Here， under the sea， everything is blue and green．When fish swim nearby， you can catch them with your hands． When you have bottles of air on your back， you can stay in deep water for a long time． However， you can-t dive too deep． And you must be very careful when you dive in deep water．The deep sea is not an easy place to live in． It-s cold， and it，s dark， too． The deeper it is， the less sunlight there is． At about 3，000 feet， there is no light at all． It is very dark in the sea． Many fishes have no eyes． Some have big eyes． A few have eyes on one side． Besides the cold and the darkness， deep-sea animals face a third danger-other animals．Animals eat! They must find food to eat． Many animals eat plants． However， some am-mals eat meat． This means these sea animals have two big jobs． They need to find animals as food， and they have to try not to become other animals' meal．( )21． Why do people want to dive in the sea? Because ________ ．A．they want to catch fishB． they want to find the secrets of the undersea worldC． the sea is deepD， there are all kinds of plants in the sea
The greatest danger is fatigue at the wheel. Some music can ________ you into concentration loss.A contributeB lullC causeD conduce
On a weather map, a large letter “H” means ______.A.a high pressure area with cool, dry air, and fair weatherB.a high pressure area with warm, moist air, and inclement weatherC.horse latitudes, with rough seas and strong windsD.a heavy squall line near the “H”
In order to retrieve an inflatable liferaft and place it on deck，you should heave on the ______.A.lifelinesB.righting strapC.sea anchorD.towing bridle
The "horse latitudes" are regions of ______.A.brisk prevailing windsB.light airs and calmsC.abundant blue sea grass vegetationD.None of the above
What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?A.Ballast bagsB.A keelC.StrikesD.Sea anchor
What must be carried out in order to launch and inflate an inflatable liferaft?A.Pull on the hydrostatic release，pull on the sea painterB.Push on the hydrostatic release，pull on the sea painterC.Push on the hydrostatic release，push on the sea painterD.Pull on the hydrostatic release，push on the sea painter
In very high latitudes，the most practical chart projection is the ______．A.MercatorB.GnomonicC.AzimuthalD.Lambert conformal
______ are experienced in temperate latitudes during warm summer weather but rarely exceed Force 3 and may extend 10 to 15 miles on either side of the coastline．A.Trade WindsB.Winds of the temperate zonesC.MonsoonsD.Land and Sea Breezes
共用题干The SeaWhat do you know about the sea?We know that it looks very pretty when the sun is shining on it.We also know that it can be very rough when there is a strong wind.What other things do we know about it?The first thing to remember is that the sea is very big.When you look at the map of the world you will find there is more water than land.The sea covers three quarters of the world.The sea is also very deep in some places.It is not deep everywhere.Some parts of the sea are very shal-low.But in some places the depth of the sea is very great.There is one spot,near Japan,where the sea is nearly 11 kilometers deep!The highest mountain in the world is about 9 kilometers high.If that mountainwere put into the sea at that place,there would be 2 kilometers of water above it！What a deep place!If you have swum in the sea,you know that it is salty.You can taste the salt,Rivers,which fi0w into the sea.carry salt from the land into the sea.Some parts of the sea are saltier than other parts,There i、one sea,called the Dead Sea,which is very salty.It is so salty that swimmers cannot sink!Fish cannot live in theDead Sea!In most parts of the sea,there are plenty of fishes and plants.Some live near the top of the sca.Othurslive deep down.There are millions of tiny living things that float in the sea.These floating things are so smallthat it is hard to see them.Many fish live by eating them.The sea can be very cold.Divers,who go deep down in the sea,know this.On the top the water may bewarm.When the diver goes downwards,the sea becomnes colder and colder. Another thing happens.When the diver goes deeper,the water above presses down on him.It squeezes him.Then the diver has to wear clothesmade of metal.But he cannot go very deep.Some people who wanted to go very deep used a very strong diving ship!They went down to the deepest part of the sea in it.They went down to a depth of eleven kilometers!The sea is 6 kilometers in depth on average.A:RightB:WrongC:Not mentioned
共用题干The SeaWhat do you know about the sea?We know that it looks very pretty when the sun is shining on it.We also know that it can be very rough when there is a strong wind.What other things do we know about it?The first thing to remember is that the sea is very big.When you look at the map of the world you will find there is more water than land.The sea covers three quarters of the world.The sea is also very deep in some places.It is not deep everywhere.Some parts of the sea are very shal-low.But in some places the depth of the sea is very great.There is one spot,near Japan,where the sea is nearly 11 kilometers deep!The highest mountain in the world is about 9 kilometers high.If that mountainwere put into the sea at that place,there would be 2 kilometers of water above it！What a deep place!If you have swum in the sea,you know that it is salty.You can taste the salt,Rivers,which fi0w into the sea.carry salt from the land into the sea.Some parts of the sea are saltier than other parts,There i、one sea,called the Dead Sea,which is very salty.It is so salty that swimmers cannot sink!Fish cannot live in theDead Sea!In most parts of the sea,there are plenty of fishes and plants.Some live near the top of the sca.Othurslive deep down.There are millions of tiny living things that float in the sea.These floating things are so smallthat it is hard to see them.Many fish live by eating them.The sea can be very cold.Divers,who go deep down in the sea,know this.On the top the water may bewarm.When the diver goes downwards,the sea becomnes colder and colder. Another thing happens.When the diver goes deeper,the water above presses down on him.It squeezes him.Then the diver has to wear clothesmade of metal.But he cannot go very deep.Some people who wanted to go very deep used a very strong diving ship!They went down to the deepest part of the sea in it.They went down to a depth of eleven kilometers!The land takes up 25%of the world.A:RightB:WrongC:Not mentioned
单选题The “horse latitudes” are regions of（）.Abrisk prevailing windsBlight airs and calmsCabundant blue sea grass vegetationDNone of the above
单选题Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?（）.ACut the painter line so it will not pull the liferaft container downBSwim away from the container so you will not be in danger as it goes downCTake no action because the painter will cause the liferaft to inflate and open the containerDManually open the container and inflate the liferaft with the hand pump
单选题（）are experienced in temperate latitudes during warn summer weather but rarely exceed Force 3 and may extend 10 to 15 miles on either side of the coastline.ATrade WindsBWinds of the temperate zonesCMonsoonsDLand and Sea Breezes
单选题The winds you would expect to encounter in the North Atlantic between latitudes 5° and 30° are known as the（）.ADoldrumsBWesterliesCTradesDEasterlies
单选题On a weather map,a large letter “h” means（）Aa high pressure area with cool, dry air and fair weatherBa high pressure area with warm, moist air and inclement weatherChorse latitudes, with rough seas and strong windsDa heavy squall line near the “H”
单选题One of the first actions to be taken by survivors when they have boarded an inflatable liferaft is to（）.Astream the sea anchorBtake an anti-seasickness pillCopen the pressure relief valveDdrink at least one can of water
单选题In very high latitudes，the most practical chart projection is the（）.AMercatorBGnomonicCAzimuthalDLambert conformal
单选题A great circle track provides the maximum saving in distance on（）.Aeasterly courses in high latitudesBsoutherly courses in high latitudesCwesterly courses in low latitudesDeasterly courses in low latitudes that cross the equator
单选题When a hurricane passes into high latitudes over colder water and the source of heat is disrupted，the storm assumes the characteristics of（）.Aa high pressure areaBan extratropical cycloneCa tropical stormDan easterly wave
单选题What must be carried out in order to launch and inflate an inflatable liferaft? （）APull on the hydrostatic release，pull on the sea painterBPush on the hydrostatic release，pull on the sea painterCPush on the hydrostatic release，push on the sea painterDPull on the hydrostatic release，push on the sea painter
单选题To prevent loss of stability from free communication flooding you should（）.Aclose the cross-connection valve between the off-center tanksBcompletely flood high center tanksCballast double bottom wing tanksDclose any opening to the sea in an off-center tank
单选题In which voyage, between two points, is the rhumb line distance not approximately the same as the great circle distance?（）.AThe two points are in low latitudes in the same hemisphereBThe two points are in high latitudes in the same hemisphereCThe two points are near the equator, but in different hemispheresDOne point is near the equator, one point is in a high latitude, and both are near the 180th meridian
单选题Ships at sea are in urgent need of MSI because they are（）various kinds of danger.Asubject forBliable toCeasy to meetDalways encounter
单选题An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）ACut the painter line so that it will not pull the liferaft container downBSwim away from the container so that you will not be in danger as it goes downCTake no action as the pull on the painter will cause the liferaft to inflate and open the containerDManually open the container and inflate the liferaft with the hand pump
单选题The directive force of a gyrocompass（）.Aincreases with latitude，being maximum at the geographic polesBdecreases with latitude，being maximum at the geographic equatorCis greatest when a vessel is near the Earth's magnetic equatorDremains the same at all latitudes
单选题On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds. This area is called the（）.Aprevailing westerliesBgeostrophic windsCdoldrumsDhorse latitudes