平面弯曲梁在集中力作用下()发生突变。
A.轴力图
B.扭矩图
C.弯矩图
D.剪力图
参考答案:D
Will knew there was no doubt ______ that patch of grass on the other side was in a different world.
A.which
B.what
C.that
D.whether
采用混凝土泵车运送混凝土时,严禁泵车在店里架空线路下方作业。