牙周脓肿不同于牙槽脓肿的主要鉴别点在于感染来自A．牙髓病B．根尖周病变C．牙周袋D．

中国第三届京剧艺术节在南京举行，某场京剧演出的票价由2元到100元多种，某团体需购买票价为6元和10元的票共140张，其中票价为10元的票数不少于票价为6元的票数的2倍，问这两种票各购买多少张所需的钱最少？最少需要多少钱？

有些家庭认为攒钱买房，可能周期长无还款压力，但不能马上住上新房；有些家庭认为贷款买房，有压力和风险，但先住为快。究竟是要攒钱买房，还是贷款买房。

请运用唯物辩证法的矛盾观，谈谈你对市民选择购房方式的建议。（8分）

水平放置的水桶重350N，一人用300N的力竖直向上提水桶，则水桶受到的合力大小为[ ]

A、50N

B、650N

C、300N

D、0N

Traditional IP packet forwarding analyzes the____(1)____IP address contained in the network layer header of each packet as the packet travels from its source to its final destination．A router analyzes the destination IP address independently at each hop in the network．Dynamic ____(2)____protocols or static configuration builds the database needed to analyze the destination IP address(the routing table)．The process of implementing traditional IP routing also is called hop—by—hop destination—based____(3)____routing．Although successful，and obviously widely deployed，certain restrictions，which have been realized for some time，exist for this method of packet forwarding that diminish its____(4)____．New techniques are therefore required to address and expand the functionality of an IP—based network infrastructure．This first chapter concentrate on identifying these restrictions and presents a rew，architecture，known as multipIeprotocol____(5)____switching，that provides solutions to some of these restrictions．

(4)

A．reliability

B．flexibility

C．stability

D．capability

排出管与室外排水管连接处设检查井。一般检查井中心至建筑物外墙的距离（）。

A．小于3m

B．随意

C．不小于3m，不大于10m

D．大于10m