A.bottom floor
B.outer bottom
C.shear plating
D.tank top
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A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
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
最新試題
The connected joints of pipe，usually made of three joints of pipe approximately 90 feet long，racked in the derrick when making a trip are called a（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
Each cylinder in a two stroke cycle engine experiences combustion（）.
The most common type of davit found on merchant vessels today is the（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
The bypass valve on a self-contained breathing device should be opened if（）.
The portable radio apparatus means（）.
The holding capability of an anchor is primarily determined by the（）.
If the engine of a survival craft does not start，check to see（）.
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（）.