A.prevent them from falling when the vessel rolls
B.protect personnel from electrical shock
C.increase their operating efficiency
D.prevent unauthorized personnel from operating them
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A.actual depth of water
B.actual depth of water below keel
C.average depth from waterline to hard bottom
D.average depth of water to soft bottom
A.floors
B.intercostals
C.girders
D.stringers
A.camel
B.dolphin
C.rat guard
D.wedge
A.bottom floor
B.outer bottom
C.shear plating
D.tank top
A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
最新試題
The series of valves used to control the return flow in well control operations is called the（）.
All electrical appliances aboard a vessel should be grounded to（）.
The holding capability of an anchor is primarily determined by the（）.
In relation to cargo gear，what does SWL mean?（）.
As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.
Static electricity may be built up by the（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
An example of a modern anchor which has a stock is a(n)（）.
Limit switches are used on which davits?（）