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【多选题】
转录过程需要下列哪些成分参与A.
dNTP
B.
RNA指导的DNA聚合酶
C.
DNA指导的RNA聚合酶
D.
DNA模板
E.
NTP
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举一反三
【简答题】A．File idea occurred to him when he went shopping yesterday. B．He got the idea when he was on his way back yesterday. C．He had the idea when he was lying in bed last night. D．He got the idea on his wa...
【单选题】When Tom was very young, he was terribly frightened of snakes, but he soon ______ it.
A.
got over
B.
got across
C.
got through
D.
got off
【单选题】No sooner ____ to the cinema ____ the film began. [ ]
A.
had he got, than
B.
he had got, when
C.
did he get, than
D.
had he got, when
【简答题】炉衬的破损原因主要有（）、急冷急热、机械冲撞、化学侵蚀等几方面作用。
【简答题】炉衬的破损原因主要有高温热流的作用、（）、机械冲撞的作用、化学侵蚀等几方面作用。
【简答题】炉衬的破损原因主要有高温热流的作用、急冷急热的作用、（）、化学侵蚀等几方面作用。
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