电源线、保护接零线、保护接地线应采用（）、（）、（）或其他可靠方法连接。
A.焊接
B.压接
C.钩挂
D.螺栓连接
参考答案：A, B, D
—Excuse me, your name?
A. What B. what’s C. What’s
----Putting on a happy face not only helps to make friends, but also makes us feel better.
----_________________.
A．I’d love to
B．It’s up to you
C．I’m with you on that
D．It’s my pleasure
