消防安全腰带是一种紧扣于腰部的带有必要金属零件的织带,用于承受人体重量以保护其安全,适用于消防员()。
A.拖车
B.吊升
C.逃生自救
D.登梯作业
参考答案:A, B
The thief was apprehended, but his accomplice had disappeared.
A.people who saw him
B.the person who helped him
C.guns and knives
D.stolen goods
用同样数量的柴油加入转动机械内进行清洗时,油位应高于正常油面()mm。
A.10~20
B.20~30
C.30~40
D.40~50