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【简答题】
下面关于函数依赖的叙述中,正确的是( )。 Ⅰ.若X→Y,X→Z,则X→YZⅡ.若XY→Z,则x→Z,Y→Z Ⅲ.若X→Y,WY→Z,则X→ZⅣ.若X→Y,Y→Y’,则X→Y’
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【简答题】编写一个学生和教师数据输入和显示程序,学生数据有编号、姓名、班级和成绩,教师数据有编号、姓名、职称和部门。要求将编号、姓名输入和显示设计成一个类person,并作为学生数据操作类student和教师类数据操作类teacher的基类。
【单选题】音色明亮,具有力量感,擅长表现军队形象的是
A.
木管乐器
B.
弹拨乐器
C.
弓弦乐器
D.
铜管乐器
【简答题】Complete the sentences with the words or expressions given, changing the form where necessary. 1. Recently the company has been trying to increase its _______ by diversifying into other fields. 2. The...
【单选题】音色明亮,具有力量感,擅长表现军队形象的是
A.
铜管乐器
B.
弹拨乐器
C.
木管乐器
D.
弓弦乐器
【单选题】By diversifying and selecting different assets for a portfolio, we can
A.
increase the variability of the portfolio.
B.
increase the possibility of making direct foreign investments.
C.
reduce the variability of the portfolio.
D.
reduce the systematic risk arising from the investments we make.
【简答题】Siemens is a 150-year-old German company, but it's not the company it was even a few years ago. Until recently, Siemens focused on producing electrical products. Today the firm has diversified into so...
【单选题】音色明亮,具有力量感,擅长表现军队形象的是
A.
弓弦乐器
B.
木管乐器
C.
弹拨乐器
D.
铜管乐器
【简答题】Our strategy for • Bentix is to position • brand as a major player in • medium cost health and personal care arena,by not only expanding its antiseptics offering,but also diversifying into • other hea...
【多选题】室内设计师需掌握的设计软件
A.
3D MAX
B.
CAD
C.
photo shop
D.
犀牛
【简答题】派生类的定义及构造函数问题 编写一个学生和教师数据输入和显示程序,学生数据有编号、姓名、班号和成绩,教师数据有编号、姓名、职称和部门。要求将编号、姓名输入和显示设计成一个类 person ,并作为学生数据操作类 student 和教师数据操作类 teacher 的基类。
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