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【单选题】
为了除去发酵青霉素中的蛋白质,需加入( )A.
助溶剂
B.
絮凝剂
C.
交联剂
D.
乳化剂
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反馈参考答案：
举一反三
【单选题】He made a proposal that the problem ______ at the meeting. ( )
A.
discuss
B.
be discussed
C.
will be discussed
D.
would be discussed
【单选题】What does the doctor think his problem is?
A.
His wife.
B.
His job.
C.
His operation.
【简答题】家畜胃肠内的静脉血汇合后首先形成（），经肝门进入肝内，再经肝静脉流入（）。
【简答题】家畜胃肠内的静脉血汇合后首先形成(),经肝门进入肝内,再经肝静脉流入()。
【简答题】黄瓜栽培中,白天在适温下,适当降低夜间温度,有利于体内营养物质的积累。有利于( )的分化。
【简答题】His proposal was that the problem (discuss) ______ at the meeting.
【单选题】Was it in 1802 when he discovered his hearing problem _____ Beethoven realized that his future ______ in composing music? [ ]
A.
that; lay
B.
when; lay
C.
which; laid
D.
that; laid
【简答题】3 5 的倒数与 1 2 的倒数的和除以 1 4 的倒数，是多少？
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