AnABCdrychemicalfireextinguisherwouldbeLEASTeffecti

An ABC dry chemical fire extinguisher would be LEAST effective against a fire in ______.

A.a mattress

B.spilled liquids such as oil or paint

C.high voltage electrical gear

D.a trash can

正确答案：A
干粉灭火机对席子着火的扑救效果最差