A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
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A.keeps sparks from falling into an open tank
B.secures covers on ullage openings
C.prevents sparks from getting out of an engine's exhaust system
D.grounds static electricity
A.blind flange
B.pivot coupling
C.quick-release coupling
D.spectacle flange
A.yearly inspection
B.quarterly inspection
C.monthly inspection
D.weekly inspection
A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line
A.positive correction
B.dip error
C.negative correction
D.semidiameter error
最新試題
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
The exhaust pipe must be gas tight throughout its entire length otherwise（）.
The purpose of a bilge well is to（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
Static electricity may be built up by the（）.
In relation to cargo gear，what does SWL mean?（）.
In ship construction，frame spacing is（）.
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（）.
Cargo pump relief valves are piped to the（）.
The holding capability of an anchor is primarily determined by the（）.