螺线管通电后，根据磁极画出通电螺线管的线圈绕向．
根据螺线管中电流方向，再结合螺线管的N、S极，利用右手螺旋定则可以确定螺线管的绕向，如下图所示：
—______he ______ any basketballs?
—Yes, he has one. [ ]
A. Does, have
B. Does, has
C. Do, have
D. Do, has
以下( )是伪传递规则。
