A.fairlead
B.heaving line
C.stay
D.warp
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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
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
最新試題
Limit switches are used on which davits?（）
Static electricity may be built up by the（）.
The purpose of a bilge well is to（）.
In ship construction，frame spacing is（）.
The exhaust pipe must be gas tight throughout its entire length otherwise（）.
An example of a messenger is a（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
Anchors are prevented from running out when secured by the（）.
All electrical appliances aboard a vessel should be grounded to（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.