携带式用电设备的接地芯线，应采用多股软铜线，其截面不应小于（）mm2。
A、2.5
B、1.5
C、1
D、0.75
参考答案：B
用所给词的适当形式填空
1. Good watches must have good _____(quality).
2. Don't you think the sofa is very _____(comfort) ?
3. How many _____(province) are there in China?
4. Who runs _____(fast) in this class?
5. I speak English _____(badly) than he does.
在考虑子宫内膜异位症的辅助检查中，下列哪项不宜()
A．腹腔镜检查
B．CT检查
C．剖腹探查
D．CA125测定
E．超声检查
