汽车液压制动皮碗,B类工作温度范围()。
A.-40—70℃
B.-40—120℃
C.-50—100℃
D.以上都不是
参考答案:B
In this company, it is required that anyone who ______ recently come here _____ this kind of test.
A.has; has
B.has; have
C.have; have
D.have; has
用标准件试装时,应有三分之一的长度能用手拧入,再用工件拧入后还要留有()扣。
A.1~2
B.2~3
C.3~5
D.4~5