单选题 Software engineers apply the principles of software engineering to the design, development, ______, testing, and evaluation of the software and systems that make computers or anything containing software work.
【正确答案】 D
【答案解析】[解析] 软件工程师应用软件工程的原理来设计，开发，维护，测试，并对任何使用计算机和包含软件的工作进行评价。
A．需求 B．构造 C．服务 D．维护