—We should adopt ________methods to deal with  some incidents. You know，anything could occur  in that situation.

—I got it. Thank you for reminding me.

A．flexible

B．typical

C．positive

D．concrete

供主机启动的密气瓶容量应保证不可换向柴油机在不补充空气的情况下，从冷机连续启动不少于（）。

A、6次

B、8次

C、10次

D、12次