直角三角形中，某锐角的正切函数是（）。A、对边／斜边 B、邻边_爱下问搜题

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问题单项选择题

直角三角形中，某锐角的正切函数是（）。

A、对边／斜边

B、邻边／斜边

C、对边／邻边

D、邻边／对边

答案

参考答案：C

填空题

根据句意从方框中选用合适的词语，并用其适当形式填空。

clean out; chat; be off; mostly; look forward to

1. He _______ his bedroom. It's clean now.
2. The boy _______ seeing his mother now. He misses her very much.
3. They are interested in _______ on the Net, for it can make them know each other well.
4. I must _______. I'm meeting Brand at half past seven.
5. I write to my mother every week, _______ on Sundays.

问答题简答题

按照《变电站工程和输电线路工程监理工作表式》规定，简述监理日志填写的主要内容。