叙述程序控制的功能。
参考答案：
程序控制的功能大体包括如下几方面内容：
①程序起动和停止；
②程序配煤；
③自动跨仓和停煤源；
④事故音响信号。
“Don’t talk in class again ”, the teacher said to him .
The teacher ________.
A．asks him not to talk in class again
B．told him to not talk in class again
C．asked him to not talk in class again
D．told him not to talk in class again
通用式机械搅拌发酵罐中挡板的作用是什么？
ld him to not talk in class again