当电容电流大于()后(建议参考值)消弧设备容量不足以补偿母线电容电流时,建议将中性点接地方式改为小电阻接地系统。
A.80A
B.100A
C.120A
D.140A
参考答案:B
By the time Jack returned home from England, his son from college.
A.graduated
B.has graduated
C.had been
D.had graduated
设备安装准备工作是( )准备。
A.施工
B.供应工作
C.组织
D.技术