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【单选题】
保存库血适宜的温度和日期为A.
2℃，2～3
B.
2℃，4～8
C.
4℃，2～3
D.
4℃，4～8
E.
35℃，4～8
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举一反三
【简答题】氯霉素最主要的不良反应是____________。
【简答题】函数 的图象在点 处的切线的倾斜角为 A． B． C． D．
【单选题】--- I’ll be away on a business trip. Could you mind 1ooking after my cat? --- Not at all. .
A.
I’ve no time
B.
I’d rather not
C.
I’d like it
D.
I’d be happy to
【单选题】He is trying to swim out to the beacon and back. He must be insane to have _______________ such a thing. The current is far too strong.
A.
obliged himself to
B.
committed himself to
C.
engaged himself to
D.
resolved himself to
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