轧辊磨削时，为使加工过程稳定砂轮中心线在轧辊中心线的（）。
A.略微上方
B.正水平位置
C.略微下方
参考答案：C
People all over the country felt shocked _______ they heard of the news ______eight children were killed at the school gate .
A．the moment , that
B．when , which
C．immediately , /
D．the second , what
合议制度
