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【多选题】
已知卵清蛋白pI=4.6,β乳球蛋白pI=5.2,蛋白酶原pI=9.1,上述蛋白质在电场中的移动情况A.
缓冲液pH为7.0时,蛋白酶原向阳极移动,其他两种向阴极移动
B.
缓冲液pH为5.0时,卵清蛋白向阳极移动,其他两种向阴极移动
C.
缓冲液pH为9.1时,蛋白酶原在原地不动,其他两种向阳极移动
D.
缓冲液pH为5.2时,乳球蛋白在原地不动,卵清蛋白向阳极移动,蛋白酶原向阴极移动
E.
缓冲液pH为10时,乳球蛋白,卵清蛋白,蛋白酶原阴极移动
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【单选题】The Free churches do not include___
A.
The church of England
B.
The Methodist Church
C.
The Baptist Church
D.
The United Reformed Church
【简答题】The
Free Churches do NOT include _________.A. the
Church of England B. the
Methodist Church C. the
Baptist Church D. the
United Reformed Church
【单选题】听力原文： Religious and private schools receive little or no support from public taxes in the United States. As a result, they are more expensive to attend. The religious schools in America axe usually ru...
A.
The number of students they take in is limited.
B.
They receive little or no support from public taxes.
C.
They are only open to children from rich families.
D.
They have to pay more taxes.
【单选题】听力原文： Religions and private schools receive little or no support from public taxes in the United States. As a result, they are more expensive to attend. The religious schools in America are usually nm...
A.
The number of students they take in is limited.
B.
They receive little or no support from public taxes.
C.
They are only open to children from rich families.
D.
They have to pay more taxes.
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