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（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
Anchors are prevented from running out when secured by the（）.
The most common type of davit found on merchant vessels today is the（）.
In nautical terminology a dog is a（）.
In ship construction，frame spacing is（）.
An example of a modern anchor which has a stock is a(n)（）.
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（）.
Permission is kindly requested（）the ballast water.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）