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【单选题】
在迈克尔逊干涉仪的一支光,放入一片折射率为n的透明介质薄膜后,测出两的光程差的改变量为一个波长,则薄膜的厚度是A.
。
B.
。
C.
。
D.
。
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【简答题】根据课文内容完成短文。 At 3: 42 a.m. on July 28, 1976, the greatest earthquake shook Tangshan. Before that, something 1. ________ looked strange was happening, but the one million people of the city, 2.________ ...
【简答题】单词拼写 1 . I was about to inform you of the sudden change when an ________( 意想不到的 ) visitor came. 2 . The ____________( 消失 ) of a schoolgirl was very worrying among the teachers. 3 . History is the best...
【简答题】This summer I made my first show. When I 1 , I had no idea how much time it would need. It was July. I spent a whole month on my show. It made me feel tired and 2 . I wasn't sure if I could make it. T...
【简答题】完形填空。 Last July, my 12-year-old car died on California's Santa Freeway. It was an hour before sunset, and I was 25 miles from home. I couldn't reach anyone to pick me up, so I 1 to take a bus. Not kno...
【多选题】中央银行是在商业银行的基础上发展形成的，是一个国家的货币金融管理机构，其特点可概括为（）。
A.
"发行的银行”
B.
"国家的银行"
C.
"存款货币银行"
D.
"银行的银行"
E.
"监管的银行"
【单选题】It was on July 4, 1776 _____the Continentai Congress ( 大陆会议 ) adopted the Declaration of Independence.
A.
when
B.
that
C.
what
D.
which
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