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
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
In relation to cargo gear，what does SWL mean?（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
If the engine of a survival craft does not start，check to see（）.
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?（）
An integral part of a blowout preventer that serves as the closing element on an open hole，and whose ends do not fit around the drill pipe but seal against each other and shut off the space below completely is the（）.
Limit switches are used on which davits?（）
The C02 flooding system is actuated by a sequence of steps which are（）.
The holding capability of an anchor is primarily determined by the（）.