一条直线的平行线有无数条。[ ]
正确
根据汉语填写单词或根据所给词填写适当形式。
1. What's _______ (she) name?
2. Look at these _______ (照片), please.
3. Can you _______ (拼写) it, please?
4. Bill _______ (watch) TV every day.
5. Mary's brother and sister are _______ (run).
煤矿井下远距离控制的额定电压,不得超过()V?
A、12V
B、36V
C、127V
D、380V