A.The unit is working properly
B.The face mask is not sealed properly
C.The air bottle needs to be refilled
D.The air supply hose has a leak
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A.corrosive
B.class B poison
C.oxidizer
D.explosive
A.The cargo's temperature is colder than the dew point of the air in the space
B.The cargo's temperature is warmer than the dew point of the air in the space
C.The dew point of the air in the space is lower than the dew point of the outside air
D.All of the above
A.Cement
B.Chinaware
C.Fish meal
D.Steel products
最新試題
An “atoll cloud” forming over an island due to heating of the land during the daytime would be which type? （）
An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.
An example of a grade B product is（）.
Explosive and flammable gasses are most likely to be encountered on a vessel（）.
An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.
AMVER is a system which provides（）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
All OSV personnel should be familiar with survival craft（）.