如图5-47所示,悬臂梁中的最大正应力σmax的值为()。
A.A
B.B
C.C
D.D
参考答案:A
解析:
。
--- I' m surprised to hear that Sue and Paul have ___ _____ .
---So am I. They seemed very happy together when I last saw them.
A.broken up
B.finished up
C.divided up
D.closed up
火力发电厂中锅炉是生产蒸汽的设备,锅炉的容量叫蒸发量,它的单位是t/h。