一般试验机的输入电源为（）V，输出电压为（）V。

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问题填空题

答案

参考答案：380；6

补全对话，情景问答

( ) 1. Who is that?	A. That is my father. B. That is my mother.
( ) 2. What's it?	A. Thank you. B. It's a pencil.
( ) 3. Can he draw?	A. No, he can't. B. Yes, he can.
( ) 4. Thank you!	A. Happy birthday, Peter! B. Have a hamburger.
( ) 5. What do you like, Ann?	A. I like milk. B. I like rice.

单项选择题

根据大量实际数据测算，砖混结构房屋的建安造价与建筑寿命期的维修养护管理费用的比率平均达到（）。

A.0.7：1

B.1：0.7

C.2：1

D.1：1