供电系统中镀锌钢管的跨接接地线宜采用( )跨接。A.暗配接地线卡 B.专用接地线卡 发布时间:2018-01-12 05:35 │ 来源:www.tikuol.com 题型:单项选择题 问题: 供电系统中镀锌钢管的跨接接地线宜采用( )跨接。A.暗配接地线卡B.专用接地线卡C.特殊接地线卡D.普通接地线卡
题型:单项选择题 短文填空。 Bill a 1 Zhang Min are good friends. T 2 are in No. 5 High School. Bill is an American(美国、美洲) b 3 . He is eleven. He is in Class Three, Grade One. His Chinese t 4 is Mr. Su. Zhang Min is a Chinese girl. S 5 is twelve. He is in Class Two, Grade One. His English teacher is Mrs. King. 查看答案
题型:单项选择题 纵向水平杆(大横杆)的对接扣件应交错布置,两根相邻杆的接头,在不同步或不同跨的水平方向错开的距离应()。A.不小于300mmB.不小于400mmC.不小于500mmD.不大于500mm 查看答案