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单选题
The tops of vents from gasoline tanks should terminate（）.
A
in open air
B
inside cabins
C
in machinery space
D
underwater
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You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?A.Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB.The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC.The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD.Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
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Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?A.Each vent for the tank must be equal to the area of the tank filling lineB.The tanks must be protected by overflowsC.The total area of the vents or the overflow shall be at least equal to the area of the fill lineD.There must be twice as much vent area as the area of the fill line
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While underway and towing an unmanned tank barge you are required to ______.A.maintain a strict watch on the barge from the towing vesselB.fly a red flag from the towing vesselC.open the tops of all empty tanks on the bargeD.take hourly soundings of any loaded tanks on the barge
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The nozzle of a gasoline hose or can should be kept ______．A.In contact with the fill opening to guard against static sparkB.From making contact with the fill opening to guard against static sparkC.In contact with the fill opening to allow proper ventingD.None of the above
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Which statement about entry into a space that has been sealed for a long time is TRUE ________．A.A tank that has been used to carry hazardous liquids should be tested for oxygen content，toxicity，and explosive gasesB.You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%C.The natural ventilation through the installed vents is sufficient to provide the proper oxygen contentD.The heat of the sun on upper ballast tanks，such as in a bulk carrier，may generate carbon monoxide
考题
The tops of vents from gasoline tanks should terminate ______．A.in open airB.inside cabinsC.in machinery spaceD.underwater
考题
Gasoline fuel tank vents should terminate ______．A.In the engine compartmentB.In the fuel tank spaceC.Above or outside the hullD.At the most convenient location
考题
Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with ______．A.Gooseneck vents and flame screensB.Pressure-vacuum relief valvesC.Branch vent lines and a vent headerD.Forced draft blowers
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CIt is desirable to have screens on the vents of potable water tanks to ______．A.Filter the incoming airB.Prevent explosionsC.Prevent backupsD.Stop insects from entering
考题
单选题The shut off valve at the gasoline tank which can be operated from outside the tank space （）.A
controls the amount of gasoline to the engineB
shuts off the gasoline supply at the tankC
is used if the gasoline tank leaksD
All of the above
考题
单选题Gasoline tanks should be filled（）.A
to the top to expel all vapors from the tanksB
to the top so the operator is certain how much fuel he has aboardC
with only sufficient fuel for the planned trip so excess gasoline is not carriedD
to near the top with some space allowed for gasoline expansion
考题
单选题The discharge from a carbon dioxide fire extinguisher should be directed（）.A
at the base of the flamesB
at the center of the flamesC
to the lee side of the flamesD
over the tops of the flames
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单选题When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）A
plugging gooseneck tank vents to prevent accident overflowB
maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow lineC
sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fillD
maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the ship
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单选题A precaution you should take before bunkering is to （） .A
plug the ventsB
plug the sounding pipesC
plug the scuppersD
close the lids on the vents
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单选题You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）A
Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB
The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC
The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD
Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
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单选题While underway and towing an unmanned tank barge you are required to（）.A
maintain a strict watch on the barge from the towing vesselB
fly a red flag from the towing vesselC
open the tops of all empty tanks on the bargeD
take hourly soundings of any loaded tanks on the barge
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单选题Vents are led from the engine to the head tank for the release of （） from the cooling water.A
airB
heatC
sludgeD
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单选题Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with（）.A
gooseneck vents and flame screensB
pressure-vacuum relief valvesC
branch vent lines and a vent headerD
forced draft blowers
考题
单选题Where should the tops of vents from gasoline tanks terminate?（）.A
In open airB
Inside cabins near the overheadC
In the machinery space near the engine air intakeD
Underwater
考题
单选题After fuel tanks have been topped off, which of the listed procedures should be followed next?（）A
The pressure-vacuum relief valve should be resetB
The tanks should be made seaworthy to prevent contaminationC
The tanks should be sounded to make sure the levels are not risingD
The tanks should be marked with a bull stamp on the manifold filling valve
考题
单选题A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed? （）A
The tanks lie above the waterline and are filledB
The tanks are partially filled with dry cargoC
The tanks are partially filled with liquid cargoD
The tanks are filled and lie below the waterline
考题
单选题When fueling has been completed（）.A
the fuel tank fill pipe should be left open to allow vapors to vent from the tankB
the engine should be started immediately to prevent vapor lock in the fuel lineC
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单选题Should it appear that war or blockade would prevent the vessel from safely reaching the port of destination and / or discharging the goods thereat，the Carrier（）.A
is entitled to discharge the goods at the port of loading or any other safe and convenient place and terminate the contract of carriageB
is not entitled to terminate the contract of carriageC
is not entitled to claim against the shipper or charterer any damage that he will suffer with the cargo on boardD
is entitled to claim freight with the cargo on board
考题
单选题Gasoline fuel tank vents should terminate（）.A
in the engine compartmentB
in the fuel tank spaceC
above or outside the hullD
at the most convenient location
考题
单选题To improve your vessel’s stability in a hazardous situation，you should（）.A
ballast deep tanks if they are slackB
transfer ballast athwartshipsC
pump out double bottomsD
fill double bottoms from deep tanks
考题
单选题According to the relevant regulation, lifeboat should be powered by（）.A
inboard diesel engineB
outboard diesel engineC
outboard gasoline engineD
inboard gasoline engine
考题
单选题Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）A
Each vent for the tank must be equal to the area of the tank filling lineB
The tanks must be protected by overflowsC
The total area of the vents or the overflow shall be at least equal to the area of the fill lineD
There must be twice as much vent area as the area of the fill line
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