A.Sheath-screw davits
B.Gravity davits
C.Radial davits
D.Quadrantal davits
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A.Globe valve
B.Butterfly valve
C.Gate valve
D.Packless valve
A.swivel
B.cathead spool
C.drawworks
D.stand pipe
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
最新試題
Static electricity may be built up by the（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
If the engine of a survival craft does not start，check to see（）.
The holding capability of an anchor is primarily determined by the（）.
An example of a messenger is a（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
The most common type of davit found on merchant vessels today is the（）.
The series of valves used to control the return flow in well control operations is called the（）.
Anchors are prevented from running out when secured by the（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.