單項(xiàng)選擇題If a cargo of kerosene were considered too lean to explode, then it must be（）.

A.above the explosive range
B.within the explosive range
C.below the explosive range
D.None of the above


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1.單項(xiàng)選擇題If a vessel takes a sudden severe list or trim from an unknown cause, you should first（）.

A.determine the cause before taking countermeasures
B.assume the shift is due to off-center loading
C.counterflood on the side opposite the list or trim
D.assume the cause is environment forces

2.單項(xiàng)選擇題If a void occurs in the cargo hold, it is better to（）to control the broken stowage.

A.brace it with dunnage
B.cover it with large pieces
C.fill it with small pieces
D.leave it as it is

3.單項(xiàng)選擇題If reefer spaces are not properly cleaned prior to loading cargo, it will most likely cause（）.

A.mold to develop on commodities
B.malfunction of the refrigeration equipment
C.contamination of the insulation in the space
D.All of the above

4.單項(xiàng)選擇題If the buoyant force on a ship’s hull is equal to the displacement tonnage, the ship cause（）.

A.require ballast
B.be down by the head
C.sink
D.float

5.單項(xiàng)選擇題If you are loading fruit in reefer spaces and you notice that the fruit is beginning to mold, you should（）.

A.carry the cargo at a cooler temperature than originally planned
B.write up exception on the cargo
C.refuse to carry the cargo
D.discharge CO2 into the compartment after loading