近电作业，作业人员或机械器具与750kV带电设备的风险控制距离为（）m。
A.14.5
B.15
C.16.5
D.17
参考答案：A
There are still ______ apples here. We needn't go shopping now. [ ]
A. few
B. a few
C. little
D. a little
随进(出)口货物报关单一并向海关递交的单证指的是( )。
A．随附单据 B．随附发票 C．随附提单 D．必备的装箱单
