按月做好关口表计所在母线电量平衡,110kV及以下电压等级母线电量不平衡率不超过()。
A.±l%
B.±2%
C.±5%
D.±10%
参考答案:B
Now the workers in the firm are laying on oil pipeline ___ the desert . [ ]
A. between
B. among
C. over
D. across
拉丁缩写表示眼用的是()
A.P.O
B.a
C.pr.ocul
D.pr.nar
E.pr.rect