E-mail, as well as telephone, ________ an important part in daily communication

A．is playing

B．have played

C．are playing

D．play

关于福克斯PATS系统，描述正确的是哪一项（）

A.PATS模块集成在ICM中

B.如果高速CAN网络失效，车辆无法启动

C.ICM和PCM之间必须进行初始化匹配

D.以上都正确