A、it can break down under high heat and emit noxious fumes
B、it will decompose under prolonged storage and lose its effectiveness
C、fire has been known to flash back over the surface of an oil fire
D、it is ineffective in fighting fires in high-voltage electrical equipment
更多“One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.”相关的问题
A、the extra weight required for the diesel reduction gearing B、a minimum speed for the engines that limits the minimum speed of the vessel C、the higher fuel consumption per SHP D、the low efficiency of the system when a controllable pitch propeller is used
A、one-millionth part of a second B、one-thousandth part of a second C、one-hundredth part of a second D、one-tenth part of a second
A、One shot of chain for every ten feet of water B、One shot of chain for every fifteen feet of water C、One shot of chain for every thirty feet of water D、One shot of chain for every ninety feet of water
A、one sidelight of a vessel ahead of you B、one sidelight and a masthead light of a vessel ahead of you C、one sidelight，a masthead light，and a range light of a vessel ahead of you D、both sidelights of a vessel dead ahead of you
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