一次函数y=kx+b的图象同时经过第一、三、四象限的必要但不充分条件是[ ]
A.k>0且b>0
B.k<0且b>0
C.k>0且b<0
D.k<0且b<0
答案:C
The great success of this program has been largely _____ the support given by the 10 local business men.
A.instead of
B.thanks to
C.due to
D.as a consequence
如果不想公布网络中的某些RIP路由信息,那么可以采用被动接口配置。将路由器RouterAFastethernet 0/0接口设置为被动接口的配置语句是______。
A.RouterA(Config-router)#assive-interface fastethernet0/0
B.RouterA(Config-if)#passive-interface rip
C.RouterA(Config)#assive-interface fastethemet0/0
D.RouterA(Config-if)#rip passive-interface