下列哪些属于事故预防工程技术对策中闭锁原理的措施:()
A.冲压机械的安全互锁器
B.工业生产中降低额定电压
C.电路中的自动保安器
D.在高压容器中安装卸压阀
参考答案:A, C
No agreement has been reached as both sides refused to ________ at the meeting held yesterday evening.
A.give out
B.give in
C.give up
D.give off
简述交通运输部提出的治超执法人员“五不准”?