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【简答题】
什么是功率放大电路的交越失真?怎样消除交越失真?
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举一反三
【单选题】计算机内部表示三维实体模型的方法有很多，并且正在向着多重模式发展，而在当前国际上常见的四种模式中，哪种在计算机内部仅仅是通过基本体素及它们的集合运算（如相加、相减、相贯）进行定义实体的方法称为（）。
A.
边界表示法；
B.
构造立体几何法；
C.
混合模式；
D.
空间单元表示法
【单选题】The United Nations has spoken of the individual and human right.
A.
freedom
B.
wisdom
C.
kingdom
D.
boredom
【单选题】历史和现实一再表明,只有建立共同的( )目标,一个国家和民族才会有赖以维系的精神纽带,才会有统一的意志和行动,才会有强大的凝聚力、向心力。
A.
责任
B.
信任
C.
价值
D.
理想
【单选题】The UNESCO Universal Declaration on Bioethics and Human Right s (2005) declares 15 principles covering Articles __________.
A.
1-15
B.
2-16
C.
3-17
D.
4-18
【单选题】Had she ___________ her promise, she could have made it to Stanford University. [ ]
A.
looked up to
B.
lived up to
C.
kept up with
D.
come up with
【单选题】The scientist felt _______ to work for human right and progress.
A.
it his duty
B.
that is his duty
C.
that is a duty
D.
his duty
【单选题】Had she __________her promise, she would have made it to Yale University.A.looked up to##
A.
Had she __________her promise, she would have made it to Yale University. A.looked up to
B.
lived up to
C.
kept up with
D.
come up with
【单选题】Freedom from hunger and malnutrition is a basic human right and their __________ is a fundamental prerequisite for human and national development.
A.
prescription
B.
inspection
C.
alleviation
D.
therapy
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