单项选择题
Ship’s officers should check every cargo compartment after it is filled with bulk grain to ensure（）.
A.all lighting circuits are energized
B.all void spaces are filled
C.the correct grade of cargo has been loaded
D.the heavier grade is in the lower hold
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相关考题
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单项选择题
Reinforcing frames attached to a bulkhead on a vessel are called（）.
A.side longitudinals
B.intercostals
C.stiffeners
D.brackets -
单项选择题
Progressive flooding on a ship is controlled by securing watertight boundaries and（）.
A.transferring drill water
B.dumping bulk materials
C.pumping out flooded compartments
D.evacuating the unit -
单项选择题
On a vessel，the keel is the primary strength member of the lower hull form in which direction?（）.
A.transverse
B.diagonal
C.longitudinal
D.vertical
