多媒体技术的关键在于解决动态图像和声音的存储与传输问题。若不经压缩,以 VGA640

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问题:

多媒体技术的关键在于解决动态图像和声音的存储与传输问题。若不经压缩,以 VGA640×480点阵存储一幅256色的彩色图像大约需 (1) MB存储空间,以9600b/s的速度传输这幅图像大约需 (2) s,按我国电视PAL标准每秒25幅,一张650MB的光盘可容纳约 (3) s这样的图像画面,播放时传送速率应不低于每秒 (4) MB。模拟声音数字化存放是通过采样和量化实现的,若采样频率44.1kHz,每个样本16位,存放1分钟双声道的声音约占 (5) MB存储空间。

1()

A.0.3

B.1.4

C.2.4

D.7.5

E.10

F.32

G.78.6

H.87

I.98.4

J.256

考点:计算机软件水平考试中级数据库系统工程师数据库系统工程师
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单句改错 (共10小题;每小题1分,满分10分)

小题1: Today’s festivals have many origin, some religious, some seasonal, and some for special people or events.

小题2:For the Japanese festival Oben, people should go to clean graves and light incense on memory of their ancestors.

小题3:They also light lamps and play music because they think that this will lead the ancestors back earth.

小题4:Wang Peng sat in his empty restaurant feel very frastrated.

小题5:He did not look forward to being on debt because his restaurant was no longer popular.

小题6: Discuss when they take place, what they celebrated and what people do at that time.

小题7:Both China and Japan has mid-autumn festivals.

小题8:On Children’s Day, children will dress them in beautiful clothes ,singing and

小题9:There used to have many fishes in this river but now it is seriously polluted.

小题10: As many as 200 million Yuan has been spent on education since last year.

题型:单项选择题
已知函数y=
2x+1(x<0)
1(x=0)
x2+1(x>0)
编写程序,输入自变量x的值,输出其相应的函数值,并画出程序框图.
题型:单项选择题

近来,我们对保险公司的保险商进行调查,结果显示那些工作环境比较好的保险商的工作业绩要比那些不好的高出25%。评价工作业绩的客观标准包括工作量和工作的复杂程度。这表明改善工人工作环境会提高他们的劳动生产率。那么,下述最不可能的是( )。

A.劳动生产率高的工人的工作时间并不多于生产率低的同事
B.通常情况下,对劳动生产率高的工人回报以令人愉快的工作环境
C.相对于令人愉快的劳动环境来说,不愉快的环境会降低工人的工作劲头
D.平均来看,劳动生产率低的工人在工作岗位上所花费的时间少于生产率高的同事

题型:单项选择题

下面关于数组的初始化正确的是( )。

A.0

B.22

C.12

D.10

题型:单项选择题

客户座谈会由()主持,()、()及相关人员参加。

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