再结晶退火主要用于热轧后的过共析钢的最终热处理。()
参考答案:错
It was __________ he said___________ disappointed me. [ ]
A. what; that
B. that ; that
C. what; what
D. that ; what
埋藏在地表浅出、局部隔水层的上部,且具有自由水面的地下水称为()
A.上层滞水
B.潜水
C.承压水
D.孔隙水