试题与答案

()只说明了光源的发光能力,并没有表示出光源所发出光通量在空间的分布情况。

题型:填空题

题目:

()只说明了光源的发光能力,并没有表示出光源所发出光通量在空间的分布情况。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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根据句意及首字母(或汉语)提示完成单词

1. Jiang Lei is a g           from Peking University.

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3. I put the letter into the e           and then had it mailed.

4. I will tell you a piece of d           news that we didn't get the first prize.

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6. Some students from poor v           in China often don't have enough money for college education.

7. We had seven subjects this s           .

8. Scott is a h           student. He always studies hard.

9. I'm sorry to           (打扰)you. Can you lend me your pen?

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