试述发生事故时在场人员的行动原则:()
A、及时报告灾情
B、积极抢救
C、安全撤离
D、妥善避灾
参考答案:A, B, C, D
In relation to private companies, explain the meaning of, and the procedure for passing, the following:
(b) a written resolution. (5 marks)
每年使用冻土器前,应注意检查内管、外管的0线与地面是否齐平。若产生位移,应在土壤冻结前调整好。