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

题目

● 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

参考答案
正确答案:B