You can visit Zhalong Nature Reserve, one of the few places on Earth _____ red-crowned cranes still live.

A．which

B．that

C．where

D．when

手提照明灯不准使用220伏普通电灯，行灯电压不得超过（）伏，在金属容器和水箱内部工作行灯电压不准超过（）伏。