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【单选题】
法测定牛乳脂肪含量时,加异戊醇的作用是 ( ) 。A.
调节样品比重
B.
形成酪蛋白钙盐
C.
破坏有机物
D.
促进脂肪从水中分离出来
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反馈参考答案：
举一反三
【单选题】Which of the following statements is NOT TRUE?
A.
Dr. Smith arrived in India a year ago.
B.
Dr. Smith was an experienced politician before he came to India.
C.
Dr. Smith once thought that a typical village was a better choice.
D.
Dr. Smith settled happily down in this village.
【简答题】呼吸道有 、 、 空气的功能。呼吸道有 ____、____、____空气的功能。
【单选题】听力原文：M: I'd like to make an appointment to see Dr. Smith tomorrow. W: I'm sorry. Dr. Smith went on a one-week vacation in Mexico, and on his way back he'll be staying in California for 5 days. Let me ...
A.
In Mexico.
B.
In California.
C.
In the city.
D.
In New Mexico.
【单选题】听力原文：M: Math Department, Dr. Smith speaking. W: Hello. Prof. Smith, this is Lucy Wang calling. I live two doors down from your teaching assistant, Brain Williams. Brain asked me to call you because he...
A.
He can't find his office key.
B.
He has misplaced some exams.
C.
He is unable to talk.
D.
He doesn't like his classroom.
【单选题】Which sentence is clearer?
A.
Dr. Smith introduced many new cinematic techniques.
B.
Dr. Smith made movie history by introducing such new cinematic techniques as contrasting editing, close-ups, fade-outs, and freeze-frame shot.
【简答题】微生物细胞的计数方法有哪些?
【单选题】听力原文：M：I'd like to make an appointment to see Dr．Smith tomorrow． W：I'm sorry．Dr, Smith went on a week vacation in Mexico，and on his way he'll be staying in California for 5 days． Let me see．He'll prob...
A.
In Mexico.
B.
In California.
C.
In the city.
D.
In New Mexico.
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