Maintenance activities include(74). ①making enhancements to software products ②developin

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Maintenance activities include(74).

①making enhancements to software products

②developing a new software product

③correcting problems

④adapting products to new environments

(74)

A.①②

B.①③④

C.②③④

D.①②③④

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热搜:一氧化碳的爆炸极限是12.5%~74.5%,也就是说,一氧化碳在空