A.prevent them from falling when the vessel rolls
B.protect personnel from electrical shock
C.increase their operating efficiency
D.prevent unauthorized personnel from operating them
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A.actual depth of water
B.actual depth of water below keel
C.average depth from waterline to hard bottom
D.average depth of water to soft bottom
A.floors
B.intercostals
C.girders
D.stringers
A.camel
B.dolphin
C.rat guard
D.wedge
A.bottom floor
B.outer bottom
C.shear plating
D.tank top
A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
最新試題
In ship construction，keel scantlings should be the greatest（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
An example of a modern anchor which has a stock is a(n)（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
The exhaust pipe must be gas tight throughout its entire length otherwise（）.
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（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
Permission is kindly requested（）the ballast water.
The purpose of a bilge well is to（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.