求不等式2x≤6-x的正整数解.
2x≤6-x,
2x+x≤6,
3x≤6,
x≤2,
故原不等式的正整数解是1,2;
Shanghai Waihuan Tunnel is already open to traffic, so it will take us ______ time to go to Pudong
International Airport. [ ]
A. a few
B. fewer
C. a little
D. less
IPv4/IPv6校园网系统集成主要包括()
A.IPv6实验局域网集成
B.IPv4/IPv6双栈校园网集成
C.双栈校园网
D.IPv6实验网和互连配置