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【多选题】
基因工程中klenow片段的应用包括A.
合成cDNA第二条链
B.
切平DNA 3'凸端
C.
Sanger合成测序
D.
补平DNA 3'凹端
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举一反三
【单选题】We travelled together as far as Chicago, _____ we said goodbye to each other.
A.
which
B.
when
C.
why
D.
where
【单选题】We travelled together as far as Chicago, ___ we parted.
A.
when
B.
which
C.
why
D.
where
【单选题】用并列连词连接句子 We travelled over the river. We travelled through the woods.
A.
We travelled over the river and through the woods.
B.
We travelled over the river but through the woods.
C.
We travelled over the river for through the woods.
D.
We travelled over the river so through the woods.
【单选题】关于片剂制备方法叙述错误的是()
A.
热敏性、遇水极易分解的物料适用干法制粒
B.
对湿热敏感不宜制粒的药物适用半干式颗粒压片
C.
热敏性、湿敏性、极易溶解的物料适用湿法制粒
D.
对湿热不稳定的药物适用于直接粉末压片
E.
微晶纤维素、可压性淀粉可用于直接粉末压片
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