电油汀的市电电压过低，可引起（）故障。A.通电后加热灯亮但不加_爱下问搜题

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问题单项选择题

电油汀的市电电压过低，可引起（）故障。

A.通电后加热灯亮但不加热

B.通电后加热灯不亮也不加热

C.加热温度过低

D.加热温度过高

答案

参考答案：C

选择题

光线斜射到平面镜上，保持平面镜位置不动，若入射光线靠近法线，则反射光线（　　）

A．靠近法线

B．远离法线

C．方向不变

D．无法确定

补全对话，情景问答

阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话，并将其标号填入题前括号内。

A. Who are you?
B. I'm an English guide from Beijing China Travel Service.
C. Here you are.
D. Are you Miss White from New York?
E. I'm so lucky that I could meet my guide as soon as I got off the plane.
F. Can you help me?
G. I hope we can make you at home here.

A: Excuse me, 1.
B: Yes, and you are…?
A: 2.           This is my membership card. Would you please show me your passport? (护照)
B: OK. 3.
A: Welcome to Beijing, Miss White. I am so glad that you are the first guest I have received.
B: Thank you, Miss Chen. 4.
A: Let me help you with your suitcase. Our car is waiting for us just at the entrance. 5.
B: Thank you very much for your good service.
A: You're welcome.