DNA复制过程中改变DNA超螺旋状态、理顺DNA链的酶是()。
A.DnaA
B.DnaB
C.DnaC
D.DnaG
E.拓扑异构酶
参考答案:E
—He isn’t particular about his food.
—Yes, he eats_____________ anything.
A.nearly
B.mostly
C.almost
D.possibly
电阻片切割机()的动作程序,由电器仪表控制完成。
A.送料
B.展布
C.切割
D.整机