构型(configuration)

有关系R和S,R∩S的运算等价于()

A:S-(R-S) B:R-(R-S) C:(R-S)∪S D:R∪(R-S)

使用MML命令"ZUSU:MCMU,0:R=WARM,C=DSK"重启备份MCMU, 此MCMU会()

A:Load software and configuration file from Hard disk B:Load software only, no configuration file loading C:Load configuration file from working MCMU and load software from hard disk D:Load configuration file only, no software loading

R1和R2电阻并联,等效电阻R是()。

A:R1-R2 B:R1+R2 C:(R1+R2)/R1×R2 D:R1×R2/(R1+R2)

设A、B是两个同型矩阵,则r(A+B)与r(A)+r(B)的关系为()。

A:r(A+>r+r B:r(A+=r+r C:无法比较 D:r(A+≤r+r

Configuration management is a technique for______.

A:overall change control B:project plan execution C:scope planning D:risk quantification

Configuration management is______.

A:used to ensure that the description of the project product is correct and complete B:the creation of the work breakdown structure C:the set of procedures developed to assure that project design criteria are met D:a mechanism to track budget and schedule variances

有关系R和S,R∩S的运算等价于______。

A:S-(R-S) B:R-(R-S) C:(R-S)∪S D:R∪(R-S)

设关系R1有r1个元组,关系R2有r2个元组,则关系R1和R2连接后的结果关系的元组数目是______个。

A:r1+r2 B:r1×r2 C:≤r1×r2 D:≥r1×r2

关系R和S,RNS的运算等价于( )。

A:S-(R- B:R-(R- C:(R-∪S D:R∪(R-

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