档案接受单位应当对保存电子会计档案的载体及其技术环境进行检验，确保所接收电子会计档案的（）。
查看答案
海因里希法则是一个统计结论。330起同种违章作业行为致人严重伤害的有（）.
A. 1次
B. 10次
C. 30次
D. 5次
Disastrous explosions have been caused by accumulations of oil or oil vapour in air lines not drainedAccording to the above sentence, which of the following statements is true?（）
A. Oil vapour in air piping are dangerous
B. Explosion will cause oil vapouring in air lines
C. Oil vapour in air piping should be drained
D. Oil in air piping should not be drained
微信支付 
支付宝支付