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单项选择题
Delivery must be made before August, 2018.
A、正确
B、错误
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未知题型
2003年与1990年相比.国有企事业单位中的专业技术人员占国有企事业单位职工总数的比重上升了( )。
A.22.6个百分点
B.25.3个百分点
C.27.5个百分点
D.28.8个百分点
判断题
起音是歌唱发声的开始动作。()
正确
错误
单项选择题
Which of the following statement is not true according to the article?
A、Software development includes not only the writing of code but also the preparation of goals and requirements.
B、The waterfall model is based on the concept that simplifies task scheduling to different development phase which has different goals.
C、Generally, the development of commercial software is related to the demand in the marketplace.
D、The biggest influence that open source has had is the software being distributed must be redistributed to anyone else without any restriction.
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