路票交接完毕，乘客已全部上车，车门关好后，交路票人在列车运行方向前端A车第二个客室门

计算机网络的主要功能之一是()。

A.资源共享

B.通存通兑

C.会计电算化

D.保存数据

圆形截面有()形心主惯性轴

A、一根;

B、无穷多根;

C、一对;

D、三对。

Questions 1-4

How had the man put on his pullover according to the woman？（）

A．Upside down and inside out.

B．Inside out and back to front.

C．With its sleeves as trouser legs.

D．With its pattern upside down.

主载频和辅载频的时隙转换点配置为（）。