—How is your grandma?

—She’s fine. She used to      TV at home after supper. But now she is used to______out for a walk.

A．watch;go

B．watching; go

C．watching; going

D．watch; going

励磁机空气冷却器出风温度不应超过（）℃，出风温度大于52℃时报警。冷却器进风温度不应超过（）℃，冷却器进水温度不超过35℃。