高频电疗仪在工作时可以使玻璃电极产生放电现象，玻璃电极内充有_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

高频电疗仪在工作时可以使玻璃电极产生放电现象，玻璃电极内充有氦气或氖气，发出（）或粉红色的光线。

A.绿色

B.灰色

C.红色

D.蓝色

答案

参考答案：C

补全对话，情景问答

补全对话。

A. But my favourite team lost the game.
B. She did some cleaning.
C. What did you watch?
D. What did you do last night?
E. I did some reading after the basketball game.

A: 1______
B: I watched TV at home.
A: 2______
B: I watched an NBA game. 3______
A: What a pity (遗憾)! What about your mother?
B: 4______
A: Didn't she ask you to study for the test?
B: Yes, she did. 5______
A: Good luck to you!
B: Thank you.

名词解释

发展轴理论