A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
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A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
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
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The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
The portable radio apparatus means（）.
The series of valves used to control the return flow in well control operations is called the（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
An LWT anchor often has difficulty tripping in（）.
The most common type of davit found on merchant vessels today is the（）.