对装配件表面进行除锈及污垢清除时，采用的清洗液有（）。
A.乳化除油液
B.碱性清洗液
C.溶剂油
D.酸性清洗液
参考答案：A, B
President Nicolas Sarkozy of France has been taking intensive English lessons in order to _____ his guests during his state visit to the UK.
A．appeal
B．grasp
C．hold
D．impress
碾捣法适用于下列哪些类别药物的炮制（）
A.矿物类
B.甲壳类
C.三七
D.川贝母
E.果实种子类
