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
Regular foam can be used on all but which flammable liquid?（）
One of the limitations of foam as an extinguishing agent is that foam（）.
Once a vessel has loaded packaged hazardous cargo，the cargo spaces shall be inspected. The spaces shall also be inspected at least once in every 24 hours. The only exception to daily inspection is when（）.
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（）.
Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.
The collision bulkhead shall be of（）.
The BEST method of applying foam to a fire is to（）.
The blocking or absence of fire dampers can cause（）.
The all-purpose nozzle will produce a fog spray when you（）.