直流电离子导入进入机体局部的深度（）
A.1cm深左右
B.2cm深左右
C.3cm深左右
D.4cm深左右
E.5cm深左右
参考答案：A
My sister hates the films ________ have too much fighting. [ ]
A. that
B. what
C. they
氯丁橡胶胶乳( )
