净化厂开工准备工作中必须成立开工领导小组。
参考答案：对
—Tony said he could fix my bicycle, but I really doubt it.
—_ __. He's good at that sort of thing.
A．Don't worry
B．Of course
C．A piece of cake
D．I couldn't agree more
在新部颁CDT规约中，YX变位插入传送时要求插传多少遍（）
A.6
B.3
C.2
D.4
