A.gate valve
B.pressure gauge
C.check valve
D.strainer
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A.at the base of the flames
B.at the center of the flames
C.to the lee side of the flames
D.over the tops of the flames
A.CO2 does not cool the fire
B.cylinders are regulated pressure vessels
C.C02 is not effective on class B fires
D.C02 is not effective on class C fires
A.water-tight
B.air-tight
C.fire-tight
D.oil-tight
A.should
B.shall
C.that
D.if
A.casing
B.outer hose
C.line cover
D.jacket
最新試題
Prior to getting underway，the Master or person in charge of a ship must（）.
On a ship，a fire drill shall be conducted once every（）.
Portable foam type fire extinguishers are most effective on（）.
Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.
Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.
Each crewmember has an assigned firefighting station. This assignment is shown on the（）.
How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
The disadvantage of using CO2 is that the（）.
The atmosphere in a tank is too lean if it is（）.
The BEST method of applying foam to a fire is to（）.