工序施工条件控制是指对工序施工活动的()进行有效控制。
A.合同条件和法规条件
B.工艺标准和操作规程
C.生产要素和环境条件
D.工期条件与赶工措施
参考答案:C
更换低压导线时,要填用()工作票。
A.第一种
B.第二种
C.按口头或电话命令
Before the economic crisis came, John had sensed that the firm was to be ruined and he
just in time.
A.pulled up
B.pulled out
C.pulled off
D.pulled down