求曲线y=x^2与直线y=0，x=1所围成的平面图形绕x轴旋转一周所得旋转体的体积V.
Iwouldratheryou__(come)tomorrow.
Whentheshiplostitsenginepower,thecrewfoundthemselvesatthe_________ofthewind.
_______(safe)needstobeimprovedontherailwaysinthatcountry
It’s___(reasonable)toexpectpeopletoworkmorethan60hoursaweek.
怎样理解我国现阶段按劳分配的主体地位?