转导
参考答案：是指以噬菌体为媒介，将细菌的小片段染色体或基因从一个细菌转移到另一个细菌的过程。
I can’t quite remember my daughter started dancing.
A．how did
B．it was when
C．when it was that
D．where was
传统汽车的车速里程表的车速信号来自（）。
A．点火线圈负极
B．发动机转速传感器
C．变速器的输出轴
