送电线路中导线在悬点等高的情况下,杆塔的水平档距与垂直档距()。
A、相等;
B、不相等;
C、无关;
D、近似。
参考答案:A
根据句意,用所给单词的适当形式填空。
1. All flights have ______ (cancel) because of bad weather.
2. Thank you very much for your ______ (introduce).
3. This railway line _______ (connect) London to Edinburgh.
4. He had finally ______ (achieve) success.
5. We are ______ (pride) of what he did.
一般情况,非婚生子女,会因生父母结婚,而自然转为()。