Please do not be ______ by his bad manners since he is merely trying to attract attention.

A．disgusted

B．embarrassed

C．irritated

D．shocked

当160km/h＜允许速度vmax≤200km/h时，作业人员下道避车时距钢轨头部外侧距离不小于（）。

A、2.0m

B、2.5m

C、3.0m

D、3.5m