A.radial
B.sheath-screw
C.gravity
D.quadrantal
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A.shape of the anchor
B.stowage of the anchor on board
C.anchor's ability to dig in
D.size of the vessel and its draft
A.control the pressure of the oxygen as it enters the body
B.allow the wearer to manually give himself oxygen
C.release excess heat which would otherwise cause the bottle to explode
D.allow exhaled gases to pass outside the bottle
A.boss
B.knuckle
C.skeg
D.strut
A.bilge water may enter the exhaust pipe
B.entry of air may cause vapor lock
C.carbon monoxide may enter the interior of the vessel
D.the joint gaskets may be blown
A.string
B.stand
C.joint
D.standpipe
最新試題
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 function of the bypass valve on the self-contained breathing apparatus is to（）.
An example of a modern anchor which has a stock is a(n)（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
In ship construction，keel scantlings should be the greatest（）.
The series of valves used to control the return flow in well control operations is called the（）.
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
In ship construction，frame spacing is（）.
Permission is kindly requested（）the ballast water.