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 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（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
All electrical appliances aboard a vessel should be grounded to（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
Static electricity may be built up by the（）.
The purpose of a bilge well is to（）.
In nautical terminology a dog is a（）.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）
The portable radio apparatus means（）.
In ship construction，keel scantlings should be the greatest（）.