单项选择题
An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
A.lack of toxicity
B.the multipurpose extinguishing ability
C.burn-back protection
D.cooling ability
点击查看答案&解析
相关考题
-
单项选择题
After using a Halon extinguisher，it should be（）.
A.put back in service if more than 50% of the charge remains
B.repainted
C.discarded
D.recharged -
单项选择题
After using a C02 portable extinguisher，it should be（）.
A.put back in service if some C02 remains
B.hydrostatically tested
C.retagged
D.recharged -
单项选择题
Accumulations of oily rags should be（）.
A.kept in nonmetal containers
B.discarded as soon as possible
C.cleaned thoroughly for reuse
D.kept in the paint locker
