根据《供电营业规则》,用户的无功电力应()
A.就地平衡
B.分组补偿
C.集中补偿
D.集中平衡
参考答案:A
-We didn’t see Smith at the meeting
-He______about the lecture
A.didn't tell
B.had not told
C.told
D.had not been told
估算教育预期收益率的指标有哪些?