梅花扳手用于折装六角螺母或螺栓。()
参考答案:对
脱离现场()个月以上,在恢复工作前要进行安全及运行规章的考试,考试合格后方可安排工作。
A.1;
B.2;
C.3;
D.4。
He wanted to join the medical team to help the victims in the earthquake but he______for his poor health.
A.was turned up
B.was turned on
C.was turned over
D.was turned down