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
In relation to cargo gear，what does SWL mean?（）.
In ship construction，frame spacing is（）.
Anchors are prevented from running out when secured by the（）.
The portable radio apparatus means（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
In nautical terminology a dog is a（）.
Permission is kindly requested（）the ballast water.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.