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
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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
A.refractory
B.the screen wall
C.the water wall
D.fire plate
最新試題
On a ship，a fire drill shall be conducted once every（）.
How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.
The collision bulkhead shall be of（）.
The discharge from a carbon dioxide fire extinguisher should be directed（）.
Operation of the valve control release on a fixed CO2 system must immediately（）.
The all-purpose nozzle will produce a fog spray when you（）.
On a ship，when may a work vest be substituted for a required life preserver?（）
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（）.
Overhauling a fire in the living quarters on a vessel must include（）.