锐线光源_爱下问搜题

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问题名词解释

锐线光源

答案

参考答案：

是发射线半宽度远小于吸收线半宽度的光源。锐线光源发射线半宽度很小，并且发射线与吸收线中心频率一致。

判断题

中外合资经营企业召开董事会，董事不能出席时，只能书面委托其他董事，不能委托非董事代表其出席并表决。 ( )

补全对话，情景问答

A. Did you meet any Japanese people?
B. How were the stores?
C. I went to Tokyo with my family.
D. How was the food?
E. But they were also very crowded.

A: Hi, Vera. How was your vacation?
B: It was great.
A: Where did you go?
B:  1
A: Really? Wow! What did you do there?
B:  Well, we went to a lot of museums.
A:  Oh, how were they?
B: They were really interesting.   2
A: Did you go shopping?
B:Yeah, I  did.
A: 3
B:  Oh, they were very expensive.
A: And how were the people?   4
B: Yeah, the people were really friendly. My parents have some Japanese friends, and we had dinner at their house.
A:  5
B: It was delicious.1 love Japanese food!