单项选择题

Sofiware（）occurs following delivery ofa software product to the customer.

A．analysis
B．design
C．implementation
D．Maintenance

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单项选择题

（）is the process ofarranging a group of data elements into some desired order.

A．File
B．Record
C．Sorting
D．Database

单项选择题

（）testing is the responsibility ofthe programmer, who knows exactly what is going on inside the program.

A．Acceptance
B．System
C．Black box
D．White box

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