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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 engine
B
shuts off the gasoline supply at the tank
C
is used if the gasoline tank leaks
D
All of the above
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A person may operate an air compressor in which of the following areas on board a tank barge ________．A.PumproomB.Generator roomC.A space adjacent to a cargo tankD.A space two meters from a cargo valve
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单选题Your vessel is taking on bunkers from a shore side facility, if oil begins flowing from one tank vent, which of the following actions should be taken FIRST?（）A
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单选题Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.A
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单选题When operating the air supply system in a covered lifeboat the（）.A
fuel supply valve should be closedB
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单选题Your vessel is at a dock taking bunkers through a pipe laid down on the dock. If oil begins to flow out of a tank vent，what should you do FIRST?（）A
Open the intake valve to an adjacent tankB
Set out drip pans and sawdust and begin to mop up the spillC
Signal the shore control point to shut downD
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单选题The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.A
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pressure switchesC
pressureD
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单选题In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.A
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单选题On a ship，the possibility of a blowout makes which type of diesel engine shutdown desirable?（）A
Overspeed tripB
Air inlet shut-off valveC
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单选题Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.A
be fitted with a positive fuel shut-off valve located at the tankB
have a shut-off valve at the top of the tankC
have a gate valve easily accessible in the space where the tank is locatedD
have a drain cock at the lowest point in the fuel line
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单选题Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?（）A
Commence draining that tank as quickly as possibleB
Seal off all vents to that tankC
Activate the CO2 system to that tankD
Shut off the steam heating coils
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单选题Diesel engines are considered safer than gasoline engines because（）.A
they are more heavily builtB
the fuel used is less volatileC
they can be easily reversedD
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单选题A tank which has been sealed for a long period of time can be dangerous because （）.A
steel surfaces consume oxygen by rustingB
sealed tanks usually form a vacuumC
moisture condenses in the tank, displacing the oxygenD
most tank coatings give off poisonous vapors in the presence of moisture
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单选题If a fire occurs in the boiler room because of a leaking fuel line to a burner, you shut off the fuel using the（）A
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单选题In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.A
actuate an alarm and open the engine room control valveB
actuate an alarm and open the engine room CO2 releasing valveC
open the engine room control valve and shut off engine room ventilation fansD
open the engine room control valve and then the CO2 releasing valve
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单选题What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）A
The tank must be gas freedB
The tank must be ballastedC
The tank must be vented to the atmosphereD
The bypass valve must also be closed
考题
单选题Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）A
The tank must be gas freedB
The tank must be ballastedC
The tank must be vented to the atmosphereD
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考题
单选题After received the “finished with engine” instruction, which of the following operations is false?（）A
shut off the starting air receiver outlet valveB
stop the FO priming transfer pump and shut off the correspondence inlet and outlet valveC
stop the SW pump immediately and shut off the correspondence inlet and outlet valveD
stop the FW pump immediately and shut off the correspondence inlet and outlet valve
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单选题To prevent loss of stability from free communication flooding you should（）.A
close the cross-connection valve between the off-center tanksB
completely flood high center tanksC
ballast double bottom wing tanksD
close any opening to the sea in an off-center tank
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单选题After finished the engine, which of valves cannot be shut off by the duty engineer?（）A
fuel valveB
the starting air valveC
the sea chestD
the main sea pump inlet valve
考题
单选题Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?（）A
Corrosion and eventual failure of the tankB
Gumming of the tank relief valvesC
Immediate failure of components downstream of the compressed air systemD
Boiling of the water oil mixture as pressure is reduced
考题
单选题The main propulsion diesel continues running after you try to shut downYoushould now attempt to（）A
stop the combustion air supplyB
engage the jacking gearC
secure the lube oil pumpD
shut off the fuel at the day tank
考题
单选题A person may operate an air compressor in which of the following areas on board a tank barge?（）A
PumproomB
Generator roomC
A space adjacent to a cargo tankD
A space two meters from a cargo valve
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