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
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
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)（）.
In ship construction，keel scantlings should be the greatest（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
In relation to cargo gear，what does SWL mean?（）.
Permission is kindly requested（）the ballast water.
Cargo pump relief valves are piped to the（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
Static electricity may be built up by the（）.