下列清洗方法中有乳化现象的是 [ ]
A、用自来水洗手
B、用汽油清洗油污
C、用洗涤剂清洗餐具
D、用洁厕精洗厕所
答案：C
— Could you tell me ____ ?
— Certainly. In half an hour.
A．when will the high speed train arrive
B．when the high speed train will arrive
C．when would the high speed train arrive
D．when the high speed train would arrive
高聚物改性沥青防水卷材有哪几种类型各有什么品种
