This fire extinguisher is to be used only in case of ___________.A. urgencyB. crisisC.

A carbon dioxide fire extinguisher has been partially discharged, and should be immediately _____.

Class A fires are best extinguished by quenching or cooling with _____.

The type of extinguisher which should be used for an electric fire is ______.A.carbon diox

What is the main subject of this conversation？A．San Francisco.B．Forest fires.C．Redwood tre

What is the main idea of this passage？A．Fire－control is essential for human species to lea

It is illegal to use this equipment for______firing purpose. Unauthorized use is malicious