关于differentkindsoffire的百科

• Toextinguish(熄灭)differentkindsoffires,severaltypesoffir...

• 问题详情：Toextinguish(熄灭)differentkindsoffires,severaltypesoffireextinguishershavebeeninvented.Theymustbereadyforimmediateusewhenfirebreaksout.Mostportable(手提式的)kindsoperateforlessthanaminute,sotheyareusefulonlyonsmallfires.Thelawrequiresships,t...
• 2019-10-0111970