考生文件夹下有一个数据库文件“samp1.accdb”，其中存在已经设计好的表对象“

联系上下文看，下面横线上应填入的一项是[ ]

　　贝多芬向他的客人叙述最后一次指挥音乐会的情形。这次节目是《费黛里奥》。 ___________演奏告终，全场掌声雷动。

A、贝多芬什么也听不见，很久很久背身站在指挥台上，直到一个女孩拉着他的手向观众答谢时，他才缓缓地转过身来。

B、他永远不能担任指挥了。

C、当他站在台上按着节拍指挥时，听众的脸上有一种奇怪的表情，可是谁也没有告诉他。

D、当他站在台上指挥时，对客人大声地说：“听我心里的音乐！你不知道我心里的感觉！一个乐队只能奏出我在一分钟里希望写出的音乐！”

基于“学生选课课程”数据库中的如下三个关系：

学生基本信息：S（S#，SNAME，SEX，AGE）

选课信息：SC（S#，C#，GRADE）

课程信息：C（C#，CNAME，TEACHER）

若要求“查询选修了3门以上课程的学生的学生号”，正确的SQL语句是（）。

A．SELECT S# FROM SC GROUP BY S# WHERE COUNT（*）> 3

B．SELECT S# FROM SC GROUP BY S# HAVING COUNT（*）> 3

C．SELECT S# FROM SC ORDER BY S# WHERE COUNT（*）> 3

D．SELECT S# FROM SC ORDER BY S# HAVING COUNT（*）> 3

下列属于股东经营管理权有( )

A．表决权和知情权

B．临时股东大会的提议召开权

C．股东大会的召集与主持权

D．提案权与质询权

E．司法解散请求权

In information theory, "information" is regarded as knowledge which reduces or removes (71) about the occurrence of a specific event from a given set of possible events. The concept "event" is to be understood as used in the theory of probability. For instance, an event may be the occurrence of a (72) character or word in a given message or in a given position of a message.

In communication theory, channel is defined as that part of a communication system that connects the message source with the message sink. An encoder may be inserted between the message source and the input to the channel, and a (73) between the output of the channel and the message sink. Generally, these two units are not considered as being parts of the channel. In certain cases, however, they may be considered as pans of the message source and message sink, (74) . In information theory (75) to Shannon, the channel can be characterized by the set of conditional probabilities of occurrence of all the messages received at the message sink when a given message emanates from the message source.

（71）处填（）。

A．uncertainty

B．unreliability

C．randomness

D．inconsistency

传统途径和旁路途径被激活的关键物质是（）

A.Cls

B.C

C.C3

D.C1q

E.Clr