That hero who died in the war was so brave that he never _____ to the enemies until death.

A．gave up

B．gave out

C．gave in

D．gave away

炮眼的深度、角度、间距应按设计要求确定，并应符合下列精度要求（）

A、掏槽眼眼口间距误差和眼底间距误差不得大于5cm

B、辅助眼眼口排距、行距误差均不得大于5cm

C、周边眼沿隧道设计断面轮廓线上的间距误差不得大于5cm

D、内圈炮眼至周边眼的排距误差不得大于5cm