交接箱的安装方式有以下（）种形式。
A.杆式
B.交接间式
C.墙式
D.落地式
参考答案：A, B, C, D
-______ did you live in the small village?
-For about seven years. [ ]
A. How far
B. How soon
C. How long
D. How often
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