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
The best method of extinguishing a class A fire is to（）.
Each crewmember has an assigned firefighting station. This assignment is shown on the（）.
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.
Regular foam can be used on all but which flammable liquid?（）
One advantage of the all-purpose nozzle is that it（）.
The collision bulkhead shall be of（）.
The blocking or absence of fire dampers can cause（）.
On a ship，watertight doors should be operated（）.
Prior to getting underway，the Master or person in charge of a ship must（）.
Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.