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
The function of the bypass valve on the self-contained breathing apparatus is to（）.
The exhaust pipe must be gas tight throughout its entire length otherwise（）.
In ship construction，keel scantlings should be the greatest（）.
The holding capability of an anchor is primarily determined by the（）.
Static electricity may be built up by the（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
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 C02 flooding system is actuated by a sequence of steps which are（）.
An LWT anchor often has difficulty tripping in（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.