脾病传肾属于（）
A.相生
B.相克
C.相乘
D.相侮
E.母病及子
参考答案：C
A．A点电荷一定带正电
B．试探电荷在M处的电势能小于N处的电势能
C．φM小于φN
D．UMN=UNO
John's long service with the company was ______ a present from the CEO.
A．confirmed by
B．recorded with
C．appreciated by
D．acknowledged with
