《供电监管办法》规定，需要停电或者限电的，应当符合下列规定：因（）或者（）等原因需要停电、限电的，供电企业应当按照（）批准的有序用电方案或者事故应急处置方案执行。

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．To drive the train after it is started automatically.

B．To start the train and to drive it when necessary.

C．To take care of the passengers on the train.

D．To send commanding signals to the command spot.