A.the radio apparatus fitted on the portside
B.the radio with a portable equipment
C.the radio equipment which is easily movable
D.the portable radio with some apparatus
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A.radial
B.sheath-screw
C.gravity
D.quadrantal
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
最新試題
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（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
Anchors are prevented from running out when secured by the（）.
Limit switches are used on which davits?（）
An example of a messenger is a（）.
As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
Cargo pump relief valves are piped to the（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）