—Will there be a computer on every desk in the future?

—              .[ ]

A. Yes, it will

B. No, it won't

C. Yes, there be

D. No, there won't

在线路或设备装有防止触电的断电保护情况下，人体允许的电流最大（）。

A、25mA

B、30mA

C、35mA

D、40Ma