Users also need(71)systems to help them explore the web and discover interesting data sources and interfaces that support different query and search paradigms.

A．negative

B．adaptive

C．passive

D．adaption

下列参数中，(29)是音频信息数字化的参数。

A．主频

B．采样频率

C．压缩比

D．分辨率

下列关于有损压缩的说法中正确的是(35)。

A．压缩过程可逆，相对无损压缩其压缩比较高

B．压缩过程可逆，相对无损压缩其压缩比较低

C．压缩过程不可逆，相对无损压缩其压缩比较高

D．压缩过程不可逆，相对无损压缩其压缩比较低

（72）

A.under

B.beyond

C.in

D.on

OSPF is a link-state routing protocol。It is designed to be run internal to a single __（71__system。Each OSPF router maintains an identical __（72）__ describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path __（73）__。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing __（74）__ traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol __（75）__。

A.autonomous

B.network

C.computer

D.server

已知x=-61/128，若采用8位定点机器码表示，则[X]原=（22）。

A.00111101

B.10111101

C.10011111

D.00111110