单项选择题

When dry chemical extinguishers are used to put out class B fires，there is a danger of reflash because dry chemical（）.

A.is not an effective agent on Class B fires
B.does little or no cooling
C.dissipates quickly
D.is rapidly absorbed by the liquid

相关考题

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单项选择题A shipboard Oil Pollution Emergency Plan is required of（）.

A.all vessels，regardless of size and commercial application
B.any barge or ship constructed or operated in such a manner that no oil in any form can be carried aboard
C.an oil tanker of 150 gross tons and above，or other ship of 400 gross tons and above
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单项选择题Flooding of any compartment in a ship that results in a serious loss of reserve buoyancy will always（）.

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B.increase ship stability
C.cause a serious list
D.decrease the heeling moment

A group of crew members standing by in case of an emerg...

单项选择题A group of crew members standing by in case of an emergency in order to assist other teams in action if necessary is a（）.

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C.Emergency team
D.Control team

应急预案与EMS

When dry chemical extinguishers are used to put out class B fires，there is a danger of reflash because dry chemical（）.