A.flash point
B.upper explosive limit
C.lower expiosive limit
D.All of the above
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A.heated gases flowing through ventilation syetem
B.the transfer of heat across an unobstructed space
C.burning liquids flowing into another space
D.transmitting the heat of a fire through the ships metal
A.should hold responsible for
B.should be hold responsible for
C.should be free of
D.should be brarable of
A.jumping over today
B.backing to yesterday
C.jumping over tomorrow
D.backing to the day before yesterday
A.KG is increased
B.KG is decreased
C.Kgis not affected
D.KG increases at light drafts and decrease at deep drafts
A.litmus paper
B.a combustible gas indicator
C.an oxygen breathing apparatus
D.an oxygen indicator
最新試題
The circulation around a low pressure center in the Northern Hemisphere is（）.
The dew point temperature is（）.
（）is where the crew eat their meals.
Fog is likely to occur when there is little difference between the dew point and the（）.
When steering by autopilot,how often should the steering be checked?（）
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
It is dangerous for vessels without the operational radar（）the estuary.
Before any loading takes place any signs of the previous cargo should do（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
The mean draft of a ship is the draft（）.