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
Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.
Shipping society approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew（）.
How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
One of the limitations of foam as an extinguishing agent is that foam（）.
The discharge side of every fire pump must be equipped with a（）.
The blocking or absence of fire dampers can cause（）.
Prior to getting underway，the Master or person in charge of a ship must（）.
The atmosphere in a tank is too lean if it is（）.
The BEST method of applying foam to a fire is to（）.
Portable foam type fire extinguishers are most effective on（）.