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【单选题】
下列关于面向对象程序设计的叙述不正确的是( )A.
对象具有属性:方法等特性
B.
对象之间的通信产生了消息
C.
一个对象是一个软件构造块,它包含数据与相关的操作
D.
对象的属性不能被改变
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举一反三
【单选题】After the headmaster had asked him a number of questions, the author concluded that ______.
A.
the headmaster loved games
B.
the headmaster believed that games were very important to a boy's education
C.
the headmaster and he did not play the same games
D.
hte headmaster attached great important to art
【单选题】关于职业选择的意义，你赞同的看法是( )
A.
职业选择意味着可以不断更换工作岗位
B.
提倡自由选择职业会导致无政府主义
C.
职业选择有利于个人自由的无限扩展
D.
职业选择有利于促进人的全面发展
【单选题】After the headmaster had asked him a number of questions, the author concluded that
A.
the headmaster loved games
B.
the headmaster believed that games were very important to a boy’s education
C.
the headmaster and he did not play the same games
D.
the headmaster attached great importance to art
【单选题】After the headmaster had asked him a number of questions, the author concluded that .
A.
the headmaster loved games
B.
the headmaster believed that games were very important to a boy’s education
C.
the headmaster and he did not play the same game
D.
the headmaster attached great importance to art
【单选题】关于职业选择的意义，你赞同的看法是（ ）
A.
职业选择意味着可以不断变换工作岗位
B.
提倡自由选择职业会导致无政府主义
C.
职业选择有利于个人自由的无限扩展
D.
职业选择有利于促进人的全面发展
【单选题】下列关于TCP流量控制和拥塞控制的表述错误的是()?
A.
流量控制和拥塞控制都是控制发送端的发送速率
B.
接收方的窗口字段值可以控制发送方的发送窗口
C.
拥塞窗口的值是接收方发送给发送方的控制发送方速率的值
D.
拥塞窗口的值是由网络中的通信状况确定的
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