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
您可能感興趣的試卷
你可能感興趣的試題
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
A.pump out
B.to pump out
C.pumping out
D.be pumped out
A.prevent the passage of flammable gases
B.prevent the passage of poisonous vapors
C.delay the spread of heat and flames
D.maintain watertight integrity
最新試題
An example of a messenger is a（）.
The purpose of a bilge well is to（）.
The bypass valve on a self-contained breathing device should be opened if（）.
Permission is kindly requested（）the ballast water.
If the engine of a survival craft does not start，check to see（）.
The series of valves used to control the return flow in well control operations is called the（）.
The holding capability of an anchor is primarily determined by the（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
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（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.