Toextinguish(熄灭)differentkindsoffires,severaltypesoffir...
10-01
问题详情:Toextinguish(熄灭)differentkindsoffires,severaltypesoffireextinguishershavebeeninvented.Theymustbereadyforimmediateusewhenfirebreaksout.Mostportable(手提式的)kindsoperateforlessthanaminute,sot...