All don't have a free ticket must pay the admission fee.

A．Everyone who doesn't have a free ticket

B．No one who doesn't have a free ticket

C．No one who has free tickets

D．Anyone who has free tickets

LIN数据总线是CAN数据总线的子网，它只有一根数据线，一个主控制单元最少可以连接16个子控制单元。