闭合线圈回路的（）发生变化，在线圈回路就会发生电动势和电流。
A.磁通
B.电感
C.电压
D.电流
参考答案：A
Use your head. nothing taught by others can have the same effect on you as ________learned by yourself．
A．those
B．what
C．that
D．the one
血清壁细胞抗体阳性多见于（）。
A.慢性浅表性胃炎
B.慢性萎缩性胃窦胃炎
C.慢性萎缩性胃体胃炎
D.胃溃疡
E.胃息肉
