类的可见性目的是为了支持______软件设计原则。
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结构化方法包括结构化分析方法、______、结构化程序设计方法。
焊丝直径是决定单道焊缝厚度的主要因素。( )
A. 对
B. 错
在需求规约基本格式中______是文档的技术核心。
Question 9 to 11 are based on the conversation you have just heard. What do we learn from Maria’s phone call this morning （）
A. She decided to get married in three years.
B. She insisted that Eric pursue graduate studies.
C. Her father said she could marry Eric right away.
D. Her mother objected to Eric’s flying lessons.
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