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【多选题】
面向对象设计的优化包括?A.
增加冗余关联、调整查询次数和优化操作算法来提高系统效率
B.
调整继承关系,建立良好的继承结构,以增加类和对象的重用及简化类或对象之间的关系,形成良好风格的软件体系结构
C.
采用分层结构可以采用封闭和开放两种方式,提高设计系统的易理解性和可修改性
D.
高效合理的组织对象来确定对象和对象层次关系,并确定它们对外的接口和使用的数据结构
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【单选题】已知某投资项目的某年营业收入为150万元,该年税金及附加为20万元,经营成本为70万元,该年折旧为30万元。据此计算的该年所得税前净现金流量为()
A.
60
B.
30
C.
90
D.
80
【简答题】W : To be frank, it would be very difficult for us to market your product at the price offered. M : 1 the world market. It’s workable. W: We have been approached by other suppliers 2 lower than yours....
【单选题】The writer points out that writing and discussion on crime prevention ______.
A.
are not based on facts and not systematic
B.
involve profound thinking
C.
are ideological and scientific
D.
are not explicitly expressed
【简答题】Make a short video of auction in group , the video should last at least one minute. The goods for auction can be chosen from the Yard Sale you made last week. The useful expression for auctions are ? ...
【简答题】When I was a little girl, I found love in a box all because of a class assignment. On a Friday night I 36 at the dinner table, “My teacher said we have to bring a box, a special box, for our valentine...
【简答题】Dear Alice， You really have two different questions here，so we’ll discuss them one at a time． Your problems at school may be a result of a number of things．You don’t say much about how these classmate...
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