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【简答题】
分子中基本振动的数目称为 _______ ,又称分子的独立振动数,通过它可以了解分 子中可能存在的振动形式,以及可能出现的吸收峰数目。
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】arrive past finished hurry must hard worry already Why such ______ not have Brach hem?
【单选题】某有色溶液在某一波长下用2cm吸收池测得其吸光度为 0.750 ,若改用 0.5cm 和 3cm 吸收池测得其光度各为
A.
0.188 ／ 1.125
B.
0.108/1.105
C.
0.088/1.025
D.
0.180/1.120
【简答题】Unit3 word in use.docx 1. Ernest Hemingway's keen insight into his society, ardent love for people and perceptive abilities helped him to form his own __________ characteristic of writing.
【单选题】However, his book is heartily acclaimed by all of the following writers EXCEPT
A.
Ernest Hemingway.
B.
T.S. Eliot.
C.
Ralph Ellison.
D.
lane Smiley.
【简答题】The 3 body parts talked about in this unit are _______, ________, and ________.
【简答题】上消化道出血(upper gastrointestinal hem orrhage)
【简答题】连杆的弯曲变形是怎样检验的?
【简答题】如何优化内存,提高内存的性能?
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