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 series of valves used to control the return flow in well control operations is called the（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
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 boat is stowed on the davit rather than on a cradle with which type of davit?（）
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
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?（）
An example of a messenger is a（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.