本帖最后由 Carseller 于 2011-8-4 15:36 编辑 % N2 j! o5 ~ c 9 {9 p) o5 m b' S深表痛心# o1 b( S. o5 C! s7 R% F ]
在运行管道上操作要:double blinding or double block + bleeding and lock out & tag out . 施工作业前,要做现场复核。
, ?4 x3 l9 }$ Z- y. \! T. U We should respect all people who can work hard for their wives and children in Canada. ! D2 e4 |! [$ L! V$ T3 y! K
Certainly we also respect all people who can work hard for their children in China.