指针式电流表与电动机都是根据磁场对电流具有作用力的原理而研制出来的。
参考答案：对
_____ many times, but he still didn’t know what to do next.
A．Having been told
B．Although he had been told
C．He had been told
D．Having told
王某在某公司按年薪制取酬，每月领取基本工资1000元，年终取得效益工资48000元，王某该月应纳个人所得税为（）元。
A.1140
B.4260
C.6925
D.10725
