A.water-tight
B.air-tight
C.fire-tight
D.oil-tight
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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
A.the accumulation of explosive gases
B.faster cooling of the fire
C.the fire to spread through the ventilation system
D.fixed foam systems to be ineffective
A.must be fixed if the vessel exceeds 12 meters in length
B.may be used as a fire pump
C.must be portable if there are more than 4 watertight compartments
D.must be capable of pumping at least 450 gpm
最新試題
Removing which will extinguish a fire?（）.
The all-purpose nozzle will produce a fog spray when you（）.
The discharge from a carbon dioxide fire extinguisher should be directed（）.
The BEST method of applying foam to a fire is to（）.
The disadvantage of using CO2 is that the（）.
One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.
Radiation spreads a fire by（）.
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（）.
The blocking or absence of fire dampers can cause（）.
Operation of the valve control release on a fixed CO2 system must immediately（）.