用户电工应熟练掌握（）。
A、操作技能
B、人身触电紧急救护法
C、营业报装程序
D、用户帐卡登记
参考答案：A, B
We had a good many anxious moments, but everything ___ fine in the end.
A．turned down
B．turned off
C．turned out
D．turned to
神
