电气保护性接地，主要包括()等。
A.防电化学腐蚀接地
B.直流接地
C.防雷接地
D.防静电接地
参考答案：A, C, D
---Which sport do you like better, swimming or playing basketball?
---I prefer ______ to _______. I don’t like water sports.
A. swimming, playing basketball
B. swim, play basketball
C. playing basketball, swimming
我国社会主义法一般具有溯及力，但法律另有规定的除外。 ( )
