当低压裸带电体采用板状遮护物时，裸带电体与遮护物之间的净距，不应小于（）
A.20mm
B.50mm
C.100mm
D.125mm
参考答案：B
Li Ming is _________ to a Chinese restaurant with Jenny's family.[ ]
A. go
B. going
C. goes
小儿生长发育最快的阶段是
A．婴儿期B．幼儿期C．学龄前期D．学龄期E．青春期
