A.swivel
B.cathead spool
C.drawworks
D.stand pipe
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A.at each frame
B.amidships
C.one-third the distance from the bow
D.one-third the distance from the stern
A.greater at the bow and stern
B.reduced at the bow and stern
C.uniform over the length of the vessel
D.uniform over the length of the vessel，with the exception of the machinery spaces，where it is reduced due to increased stresses
A.Safe working load
B.Ship's working lift
C.Starboard wing lift
D.Stress，weight，load
A.crow bar
B.device to force a water tight door against the frame
C.heavy steel beam
D.wedge
A.that the fuel valve is open
B.if the air supply system is open
C.if the water sprinkler system is open
D.if the limit switch is on
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An example of a modern anchor which has a stock is a(n)（）.
Static electricity may be built up by the（）.
An LWT anchor often has difficulty tripping in（）.
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
If the engine of a survival craft does not start，check to see（）.
Permission is kindly requested（）the ballast water.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
In ship construction，frame spacing is（）.
All electrical appliances aboard a vessel should be grounded to（）.