We have made good preparations for Sarah’s birthday, but if she ________ late to the party, it would ruin the surprise for her.

A．comes

B．would come

C．had come

D．were to come

以下不属于电泳涂装特点的是（）。

A、有机溶剂挥发量非常低，施工过程无火灾危险，无苯类等毒性气体

B、涂料利用率低

C、施工可机械化、自动化，效率高，但设备投资成本高

D、漆膜非常均匀，要得到平整的表面涂层比较困难