RPU的作用是()
参考答案:负责维护网元内部以太网通信
抛物线y2=2px(p>0)上一点M(3,m)到焦点的距离等于5,求抛物线的方程和m的值.
—We are going to have a picnic tomorrow
—_____ [ ]
A. Have a good time!
B. Really? I don't think so.
C. Help yourself.
D. The same to you.