列写 Σ( RI )=Σ E 方程时, RI 前的正负号取决于 ( ) 的参考方向是否一致。 A. B. C.
A.
I 与 E
B.
回路与 E
C.
回路与 I
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【单选题】Suppose that the model presented by Student 1 is cor-rect and that the transfer of genes between 2 bacteriawas interrupted after 45 min. Based on the informationprovided, which of the following genes ...