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
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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
A.Restricted area
B.Closed area
C.Prohibited place
D.Forbidden place
最新試題
The bypass valve on a self-contained breathing device should be opened if（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
The series of valves used to control the return flow in well control operations is called the（）.
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
The most common type of davit found on merchant vessels today is the（）.
In ship construction，frame spacing is（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
In relation to cargo gear，what does SWL mean?（）.
All electrical appliances aboard a vessel should be grounded to（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）