管子退火的目的是提高()。
A.塑性
B.强度
C.刚度
D.弹性
参考答案:A
______ late, he also forgot his books.
A.Not only he turned up
B.Not only he turned out
C.Not only did he turn out
D.Not only did he turn up
信用社安全保卫工作制度规定营业期间,营业人员必须按时到岗,加强柜面监督,坚持双人上岗。