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
最新試題
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
All electrical appliances aboard a vessel should be grounded to（）.
Permission is kindly requested（）the ballast water.
Static electricity may be built up by the（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
Cargo pump relief valves are piped to the（）.
The holding capability of an anchor is primarily determined by the（）.
In nautical terminology a dog is a（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
The connected joints of pipe，usually made of three joints of pipe approximately 90 feet long，racked in the derrick when making a trip are called a（）.