---It won’t take long to clean our school if all the students are willing to help.

---Yes, I think so. ________.

A．Too many cooks spoil the broth

B．Don’t put all your eggs in one basket

C．Many hands make light work

D．Every dog has its day

凡进入电化区段的机车，对危及乘务员人身安全可能造成触电危险的零部件，都必须（）。

A、拆除

B、进行加装改造

C、涂有警告标志

D、防护