The committee is discussing the problem right now. It will ______ have been solved by the end of next week.

A．eagerly

B．hopefully

C．immediately

D．gradually

阀式避雷器标称放电电流下的残压，不应大于被保护电气设备（旋转电机除外）标准雷电冲击全波耐受电压的( )。

A．60%；
B．66%；
C．71%；
D．75%。