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某软件工程项目各开发阶段工作量的比例如下表所示需求分析概要设计详细设计编码测试 0.29 0.13 0.17 0.10 0.31 假设当前己处于编码阶段，3000行程序己完成了1200行，则该工程项目开发进度已完成的比例是______。

A. 29%
B. 45%
C. 59%
D. 63%

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Certificates are documents attesting to the of a public key to an individual or other entity. They allow verification of the claim that a given publickey does in fact belong to a given individual. Certificates help prevent some one from using a phony key to someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an date, the name of the CA that issued the certificate, a serial number, and perhaps other information. Most importantly, it contains the digital __ of the certificate issuer. The most widely accepted format for certificates is X.509 , thus, Certificates can be read or written by any application complying with X.509.

A. communication
B. computation
C. expectation
D. expiration

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Certificates are documents attesting to the of a public key to an individual or other entity. They allow verification of the claim that a given publickey does in fact belong to a given individual. Certificates help prevent some one from using a phony key to someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an date, the name of the CA that issued the certificate, a serial number, and perhaps other information. Most importantly, it contains the digital __ of the certificate issuer. The most widely accepted format for certificates is X.509 , thus, Certificates can be read or written by any application complying with X.509.

A. signature
B. mark
C. stamp
D. hypertext

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MIDI enables people to use computers and electronic musical instruments. There are actually three components to MIDI, the communications " ", the Hardware Interface and a distribution called "Standard MIDI Files". In the context of the WWW, the most interesting component is the Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol __ are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.

A. format
B. text
C. wave
D. center

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下列数据表。仓库(仓库号C(3)、所在地C(8)、人数N(2)) 职工(仓库号C(3)、职工号C(2)、姓名C(8)、工资I) 检索最少有4名职工仓库的职工平均工资( )。

A) SELECT 仓库号,COUNT(*) AS人数,AVG(工资) AS 平均工资 FROM 职工; GROUPBY 仓库号 WHERE COUNT(*)＞=4
B) SELECT 仓库号,COUNT(*) AS人数,AVG(工资) AS 平均工资 FROM 职工; GROUPBY 仓库号 HAVING COUNT(*)＞=4
C) SELECT 仓库号,COUNT(*) AS人数,AVG(工资) AS 平均工资 FROM 职工; GROUPBY 职工号 WHERE COUNT(*)＞=4
D) SELECT 仓库号,COUNT(*) AS人数,AVG(工资) AS 平均工资 FROM 职工; GROUPBY 职工号 HAVING COUNT(*)＞=4

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某软件工程项目各开发阶段工作量的比例如下表所示 需求分析 概要设计 详细设计 编码 测试 0.29 0.13 0.17 0.10 0.31 假设当前己处于编码阶段，3000行程序己完成了1200行，则该工程项目开发进度已完成的比例是______。

A. 29% B. 45% C. 59% D. 63%

下列数据表。 仓库(仓库号C(3)、所在地C(8)、人数N(2)) 职工(仓库号C(3)、职工号C(2)、姓名C(8)、工资I) 检索最少有4名职工仓库的职工平均工资( )。

某软件工程项目各开发阶段工作量的比例如下表所示需求分析概要设计详细设计编码测试 0.29 0.13 0.17 0.10 0.31 假设当前己处于编码阶段，3000行程序己完成了1200行，则该工程项目开发进度已完成的比例是______。

A. 29%
B. 45%
C. 59%
D. 63%

下列数据表。仓库(仓库号C(3)、所在地C(8)、人数N(2)) 职工(仓库号C(3)、职工号C(2)、姓名C(8)、工资I) 检索最少有4名职工仓库的职工平均工资( )。