题目内容

( ) involves verifying each unit meets its system specification.

A. requirements analysis and definition
B. system and software design
C. implementation and unit testing
D. integration and system testing
E. operation and maintenance

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The ( ) process partitions the requirements to hardware or software systems.

The waterfall model is so named because of the （）from one phase to another in the software development process.

During design, problems with requirements are identified; during testing design problems are found

A. 对
B. 错

The waterfall model process is a simple linear model involves a sequence of iterations of the development activities.

A. 对
B. 错