A.boss
B.knuckle
C.skeg
D.strut
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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
A.break glass，pull valve，break glass，pull cylinder control
B.sound evacuation alarm，pull handle
C.open bypass valve，break glass，pull handle
D.open stop valve，open control valve，trip alarm
A.you are entering a space containing poisonous vapors
B.you are entering a space containing explosive gases
C.the regulator of the breathing apparatus malfunctions
D.the face piece of the breathing device is too tight
A.Crescent
B.Sheath-screw boom
C.Quadrantal
D.Radial
最新試題
The series of valves used to control the return flow in well control operations is called the（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
An example of a messenger is a（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
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（）.
The portable radio apparatus means（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
If the engine of a survival craft does not start，check to see（）.
Static electricity may be built up by the（）.