掘进工作面效果检验孔应布置在()。
参考答案:措施孔之间
一个物体做变速直线运动,测出它在10s内的平均速度是2.5m/s,那么,关于它在前5s内通过的路程,下列说法正确的是( )
A.等于12.5m
B.大于12.5m
C.小于12.5m
D.无法确定
It was difficult to tell whether he could __________ our team and work for us for that situation?
A.ask for
B.call for
C.wish for
D.stand for