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【单选题】
低速离心机用途不包括( )A.
血清分离
B.
血浆分离
C.
脑脊液有形成份分离
D.
胸腹水有形成份分离
E.
生物大分子分离
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反馈参考答案：
举一反三
【单选题】— You used to the bus to school, didn’t you?— Yes, I did. However, I am used to to school
A.
— You used to ____ the bus to school, didn’t you? — Yes, I did. However, I am used to ____ to school now. A．take; walk
B.
take; walking
C.
taking; walking
D.
taking; walk
【简答题】British Rail has indeed become more commercial over the past _____(十年)
【判断题】Dawn Schamp had been a primary school teacher before joining British Rail.
A.
正确
B.
错误
【单选题】Who do I go to school with? I go to school with ______.
A.
Kate
B.
Some friends
C.
Jim
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