什么是钢的机械性能?
参考答案:
钢的机械性能是指钢在外力作用下所表现出的性能,如强度、塑性、韧性等。
可引起急性肾功能衰竭的疾患是()
A.低血容量性休克
B.严重挤压伤
C.毒蛇咬伤
D.溶血反应
E.心肺复苏术后
The new school is _____ our previous one. [ ]
A. as three times big as
B. three times so big as
C. three times the size of
D. three times as bigger as