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【单选题】
C++对C语言作了很多改进,下列描述中()使得C语言发生了质变,从面向过程变成了面向对象。A.
增加了一些新的运算符；
B.
在面向过程的三种基本结构基础上增加了新的结构
C.
扩展名改为了.cpp
D.
引进了类和对象的概念；
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【简答题】小车的电机减速后转速300rmp,当车轮直径为50mm时,每秒钟速度为300/60=5转/秒,车轮转一圈的周长为3.14159*50=157mm,试求小车行走的速度(m/s)?
【单选题】The rules about business meals we learned in today's class may _______ in future.
A.
come in handy
B.
come at handy
C.
useful
D.
come in handing
【简答题】When it comes to eating out, we can't help thinking of big meals in the restaurants, which usually contain much more fat and less fibers. Whether it is a business meeting over lunch or a fast food mea...
【简答题】Question 46. What do we learn about McDonald's inclusion of toys in its Happy Meals? ==== Passage 10 ==== The secret to eating less and being happy about it may have been cracked years ago—by McDonald...
【单选题】What do we learn about McDonald ’ s inclusion of toys in its Happy Meals?
A.
It may shed light on people ’ s desire to crack a secret.
B.
It has proved to be key to McDonald ’ s business success.
C.
It appeals to kid ’ s curiosity to find out what is hidden inside.
D.
It may be a pleasant way for kids to reduce their food intake.
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