如图3-305所示,梁在所示荷载作用下,其剪力图为下列何项(提示:梁自重不计)()
A.A
B.B
C.C
D.D
参考答案:C
解析:
在左一跨集中力作用处,剪力突变;左二跨有恒定剪力。
_______Tom is very good at science, his brother is absolutely hopeless.
A.When
B.While
C.As
D.If
齿条在( )上的齿厚等于齿槽宽。
A.齿顶线
B.分度线
C.与分度线平行的其他直线