Movement of liquid in a tank when a vessel inclines causes an increase in ______．A.Righting armB.Metacentric heightC.Height of the uncorrected KGD.Natural rolling period
Movement of liquid in a tank when a vessel inclines causes an increase in ______．
A.Righting arm
B.Metacentric height
C.Height of the uncorrected KG
D.Natural rolling period
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Which may NOT be one of the causes for the rise of American Romantic Movement? A.The westward territorial expansionB.The great increase in populationC.The victory of the settlers in the Indian warD.The rapid economic transformation
Cargo transfer operations on a tank vessel need NOT be stopped when ______.A.a tug comes alongside while the tanker is loading grade D and E cargoesB.a large，fresh oil spill is discovered immediately adjacent to the side of the tankerC.there is an electrical storm in the vicinityD.there is a fire on the dock or on a nearby vessel
Which statement about the free surface effect is TRUE ________．A.It increases in direct proportion to the length of the tank times the breadth squaredB.It decreases at increased angles of heel due to pocketing when a tank is 90% fullC.It decreases in direct proportion to increasing specific gravity of the liquid in the tankD.In practice，the correction is considered to be a virtual reduction of KG
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For a vessel with transverse inclination, an increase in GMT causes ______.A.list to stabilize at an angle of lollB.trim to decreaseC.list to increaseD.list to decrease
单选题Especially in adverse weather,risk of collision with an offshore supply vessel increase when the vessel is moored to what side of the unit?（）.AUpwindBDownwindCCrosswindDDowncurrent
单选题Which will most likely occur when entering shallow water? （）ARudder action will become more effectiveBThe vessel's list will changeCThe vessel's trim will changeDAn increase in speed will occur
单选题Which of the following is more important in determining the amount of free surface that will be produced?（）.AThe breath of the tankBThe length of the tankCThe amount of liquid in the tankDThe position of the tank in relation to the center line of the vessel
单选题The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.Avolume of displacement of the vesselBdimensions of the surface of the liquidCamount of liquid in slack tanksDspecific gravity of the liquid in the tank
单选题A tank which carries liquid is dangerous to the stability of a vessel when it is（）.Alow in the vesselBcompletely emptyCcompletely fullDslack
单选题Movement of liquid in a tank when a vessel inclines causes an increase in（）.Arighting armBmetacentric heightCheight of the uncorrected KGDnatural rolling period
单选题Access to a cargo pumproom on a tank vessel carrying grades A，B，C or D liquid cargoes shall be（）.Aat least 13.1 feet away from the galleys，living quarters or navigation spacesBfrom the open deckConly from areas equipped with power ventilation systemsDisolated from any part of the vessel which normally contains sources of vapor ignition
单选题You are on a container vessel. What concerning the handling and stowage of containerized hazardous materials is TRUE?（）.AOpen-bed containers may be used to transport hazardous materials if the cargo is properly securedBA portable cargo tank of a flammable，cryogenic liquid may not be in transit for a period exceeding its marked rated holding time unless the liquid is inhibitedCA portable cargo tank containing a cryogenic liquid must be shipped on deck unless forced ventilation is provided to the tween-decksDA container loaded with packages of tear gas would display a placard reading Irritant
单选题A common occurrence when a vessel is running into shallow water is that（）.Athe wake is less pronouncedBthe vessel is more responsive to the rudderCsquat will cause a decrease in bottom clearance and an increase in draftDAll of the above
单选题A towing vessel is tripped when（）.Ait is overtaken by the towBit is pulled sideways by the towCthe weight of the towing hawser causes loss of maneuverabilityDthe propeller is fouled by the towing hawser
单选题When liquid is free to move transversely in a tank, the effect is called（）.AFree communicationBFree fensityCFree surfaceDNegative GM
单选题A(n) （） is a device which adds to the energy of a liquid or gas causing an increase in its pressure and a movement of the fluid.ApumpBengineCturbineDboiler
单选题According to regulations，access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo shall be（）.Afrom areas equipped with power ventilationBonly from enclosed areas free from sources of vapor ignitionCfrom the open deckDfrom within the vessel
单选题The basic function of the centrifugal pump impeller is to （）.Adirectly increase the pressure of the liquid being pumpedBdirectly increase the velocity of the liquid being pumpedCconvert the potential energy of the liquid to kinetic energyDseparate air from the liquid being pumped
单选题For a vessel with transverse inclination，an increase in GMT causes（）.Alist to stabilize at an angle of lollBlist to decreaseCtrim to decreaseDlist to increase
单选题When checking the liquid level in a tank, you should position yourself （）.Aon the windward side of the openingBon the leeward side of the openingCat a right angle to the wind directionDso that the obstruction of your body will protect you from the fumes
单选题What is the principal danger from the liquid in a half full tank onboard a vessel?（）ACorrosion from the shifting liquidBRupturing of bulkheads from the shifting liquidCLoss of stability from free surface effectDHoling of the tank bottom from the weight of the shifting liquid
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单选题The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.Avolume of liquid in the tankBvolume of displacement of the vesselClocation of the tank in the vesselDheight of the center of gravity of the vessel
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.AThe tank lie above the waterline and are filledBThe tank are partically filled with dry cargoCThe tanks are partially filled with liquid cargoDThe tanks are filled and lie below the waterline
单选题Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.Ainduced magnetism in the vessel's horizontal soft ironBchange in the magnetic field when the vessel inclines from verticalCpermanent magnetism of the vesselDmagnetic fields caused by electrical currents in the vicinity