A.permit the passage of vapor but not of flame
B.prevents the passage of flammable vapors
C.prevents inert gas from leaving a tank
D.permits vapors to exit but not enter a tank
广告位招租 联系QQ:5245112(WX同号)
您可能感興趣的試卷
你可能感興趣的試題
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
A.soild materials such as wood or bales of fiber
B.flammable liquids
C.a piece of electrical equipment
D.combustible metallic solids
A.water
B.foam
C.the range hood extinguishing system
D.fire dampers
A.punt used for painting over the side
B.small, reciprocating steam engine
C.spool-shaped drum fitted on a winch
D.swinging derrick
A.must be wet before it will release
B.should be kept in a watertight except in an emergency
C.will inflate the raft in its cradle if operaterd manually
D.must be submerged to a certain depth to release automatically
最新試題
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called().
()is halfway between the forward and after perpendiculars and is reference point for vessel construction.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its().
According to the relevant regulation, lifeboat should be powered by().
When steering by autopilot,how often should the steering be checked?()
What is a CORRECT reply to a pilot’s request, How’s your heading?()
()is where the crew eat their meals.
The ISM code is part of().
Which of the following is not an operation mode of AIS?()
It is dangerous for vessels without the operational radar()the estuary.