【简答题】不等式x-4<0的解集是( );不等式-2x-1<-1的解集是( )。
【单选题】What is true about Cisco Discovery Protocol?
B.
it discovers the routers, switches and gateways.
D.
it is network layer protocol
F.
it is physical and data link layer protocol
H.
it is proprietary protocol
【简答题】不等式x 2 -x≤0的解集是不等式x 2 -4x+m≥0的解集的子集.则实数m的取值范围是______.
【单选题】The difference between atmospheric pressure and a partial vacuum is known as:
【单选题】标志着抗日救亡运动新高潮到来的事件是( )
【简答题】Cisco专有的路由协议有__________和___________。