化学防护靴电绝缘性能:击穿电压≥5000V,且泄露电流()mA。
A.<3
B.<4
C.<5
D.<7
参考答案:A
- Shall we hand in the report tomorrow?
- _______. I don't think our teacher will be happy with it.
A.Never mind
B.Sure, go ahead
C.We'd rather not
D.Yes, better not
社区卫生服务主要为社区群众提供
A.基本医疗服务B.预防保健服务C.病后康复服务D.专科服务E.上述A、B、C三项