问题
单项选择题
在500kV电力线附近组塔时,起重机应接地良好。起重机及吊件、牵引绳索和拉绳与带电体的最小安全距离,沿垂直方向8.5m,沿水平方向()m。
A.9
B.8.5
C.8
D.7.5
答案
参考答案:C
在500kV电力线附近组塔时,起重机应接地良好。起重机及吊件、牵引绳索和拉绳与带电体的最小安全距离,沿垂直方向8.5m,沿水平方向()m。
A.9
B.8.5
C.8
D.7.5
参考答案:C
用所给的单词填空,请把单词前的序号填在横线上。 | |
In spring, it's sunny and warm, and it's always . I can . In summer, it's hot, but I can in the lake and eat . In fall, it's . I always and climb mountains. In , the weather is not very . I can't . What a pity! |