在穿过有瓦斯的地层施工使用毫秒延期电雷管时,不同段别的毫秒延期电雷管的总延期时间不得超过()ms。
A.100
B.120
C.130
D.140
参考答案:C
In relation to the formation of a contract in the context of the UN Convention for the International Sale of Goods, explain:
(b) the circumstances under which an offer may be terminated. (5 marks)
对项目进行单一指标的综合评价,需要做到()。
A.明确目标
B.界定项目综合评价范围
C.去除不必要指标
D.确定各个指标的权重
E.选定该项目的综合评价指标及判别标准