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
最新試題
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
Each cylinder in a two stroke cycle engine experiences combustion（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
In ship construction，frame spacing is（）.
The bypass valve on a self-contained breathing device should be opened if（）.
An example of a modern anchor which has a stock is a(n)（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.
Permission is kindly requested（）the ballast water.