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问题 单项选择题

患儿，7岁，下颌右侧第一乳磨牙远中邻面深龋，穿髓，经根管治疗后，应采取的治疗措施是()

A．金属全冠

B．金属嵌体

C．树脂嵌体

D．牙体充填术

E．塑料全冠

答案

参考答案：D

单项选择题

The Systems Development Life Cycle (SDLC) is a process of creating or altering information systems, and the models and methodologies that people use to develop these systems. Sequential SDLC models, such as （）, focus on complete and correct planning to guide large projects and risks to successful and predictable results.

A.Waterfall

B.ExtremeProgramming

C.Spiral

D.RapidPrototyping
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问答题

什么是虚拟存储器在页式存储管理系统中如何实现虚拟存储器
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