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
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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
A.flow of petroleum through pipes
B.spraying or splashing of petroleum
C.settling of solids or water in petroleum
D.All of the above
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（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
The holding capability of an anchor is primarily determined by the（）.
The portable radio apparatus means（）.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）
The bypass valve on a self-contained breathing device should be opened if（）.
Permission is kindly requested（）the ballast water.
An example of a modern anchor which has a stock is a(n)（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
An LWT anchor often has difficulty tripping in（）.