明敷接地引下线及室内接地干线的支持件间距是怎样规定的?
参考答案:间距应均匀,水平直线部分0.5~1.5m;垂直直线部分1.5~3m;弯曲部分0.3~0.5m。
用所给词的正确形式。
1. When I ________(give) you a present, you must open it at once.
2. American people eat lots of ________ (hamburger) everyday.
3. Can he ________ (help) me ________ (do) the work?
4. It's too difficult ________ (understand)what you are trying ________ (say).
5. He could see the smoke ________ (rise) from the chimney (烟囱) when he
________ (walk) past your house at this time yesterday.