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【简答题】
粗面内质网膜上的核糖体结合蛋白是______，这类蛋白对核糖体有高度亲合力，可与核糖体______结合。
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皮皮学刷刷变学霸
举一反三
【单选题】He must have had an accident , or he here for class then .
A.
had to be
B.
should be
C.
would be
D.
would have been
【简答题】RC 积分电路由 RC 串联组成,从 ( ) 上输出电压;电路时间常数远 ( ) 于脉冲宽度 。
【单选题】He must have had an accident，or he ______ then．
A.
would have been here
B.
should be here
C.
had to be here
D.
would be here
【单选题】He must have had an accident, or he now.
A.
would have been here
B.
had to be here
C.
should be here
D.
would be here
【简答题】RC 积分电路由 RC 串联组成,从 上输出电压;电路时间常数远 于脉冲宽度 。
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