行政复议决定
参考答案：
是复议机关对行政复议案件进行审理后所作的具体法律效力的评价。
6．--- Is there any possible way to help them get rid of such a bad habit?
--- To tell the truth, it’s very hard. But we teachers________on this problem.
A．are working
B．had worked
C．worked
D．had been working
A．变压器输出端所接电压表的示数为20V
B．变压器的输出功率为200W
C．变压器输出端的交流电的频率为50Hz
D．穿过变压器铁芯的磁通量变化率的最大值为20/n2Wb/s
V
/n2Wb/s