A.brake
B.devil's claw
C.pawls
D.All of the above
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A.sand
B.soft soil
C.stiff clay
D.heterogeneous soil
A.shear ram
B.blind ram
C.pipe ram
D.annular ram
A.articulated anchor
B.Flipper Delta anchor
C.Baldt anchor
D.Danforth anchor
A.fairlead
B.heaving line
C.stay
D.warp
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
最新試題
The portable radio apparatus means（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
In nautical terminology a dog is a（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
An example of a modern anchor which has a stock is a(n)（）.
Limit switches are used on which davits?（）
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
Anchors are prevented from running out when secured by the（）.
In relation to cargo gear，what does SWL mean?（）.
The series of valves used to control the return flow in well control operations is called the（）.