磁路中的磁通与磁通势成反比。
参考答案:错
反映事物内部结构特征的指标是
A.率
B.相对比
C.构成比
D.百分位数
E.变异系数
The blind boy had enough money to do the operation______your kind donation. [ ]
A. because
B. because of
C. as
D. since15