软化系数越大的材料,长期受水作用后,其强度降低越多。()
参考答案:错
__ Why do you suggest buying a new machine?
__ Because the old one has been damaged __________.
A.in use
B.beyond control
C.within reach
D.beyond repair
明确了中国足球职业化、市场化和社会化改革方向的会议是()。