跨越()电力线,有地线时,封顶网(杆)与导线的垂直最小安全距离为1.5m。
A.66~110kV
B.220kV
C.330kV
D.500kV
参考答案:B
While Maggie, a white-collar worker, was at home after work, she ______ doing something to doing nothing.
A.liked
B.favored
C.tended
D.preferred
有一些信件,把它们平均分成三分后还剩2封,将其中两份平均三等分还多出2封,问这些信件至少有多少封()
A.20
B.26
C.23
D.29