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
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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
A.a defective ignition system
B.low lube oil level
C.weak valve springs
D.too heavy a load
A.once each crankshaft revolution
B.twice each crankshaft revolution
C.every other crankshaft revolution
D.every fourth stroke
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