分离工序中板料分离面所受应力特征是，最大应力值（）材料的强度极限。
A.>
B.=
C.>=
D.<
参考答案：C
The train arrived twenty minutes late, but we were not told what caused the ____. http:/
A．delay
B．late
C．slow
D．behind time
I know the girl. ________ parents work in the factory.
A. Its B. Her C. His D She
