受电变压器容量在100KVA及以上的()客户执行功率调整因数调整电费。
A.高压供电
B.低压供电
C.趸售用电
D.农业生产
参考答案:A, C, D
The famous singer ______ where he was born and in 1930 he came to Beijing.
A.brought up
B.picked out
C.set up
D.grew up
充填材料应选用
A.复合体
B.复合树脂
C.银汞合金
D.磷酸锌粘固粉
E.玻璃离子粘固粉