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【单选题】
已知 与 都是方程 的解,则 是( )其中 是任意常数A.
该方程的通解
B.
该方程的解,但不是通解
C.
该方程的特解
D.
不一定是该方程的解
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【简答题】In China，where English is almost the official second language，many Chinese people have learned to speak as professionally as native speakers. However they may have an accent and make a few minor...
【简答题】For centuries, Chinese people have been encouraged to fight back against crime and help out with emergencies in a selfless manner. However, should our youth sacrifice their lives in an emergency or is...
【单选题】Although the living standards of Chinese people have greatly improved, most poor families in China spend 50% of their income on food.
A.
gradually
B.
approximately
C.
harmfully
D.
curiously
【单选题】分层法在应用时的基本原则是()
A.
层内、层间数据波动尽可能大
B.
层内、层间数据波动尽可能小
C.
层内数据波动尽可能大，层间数据差别尽可能小
D.
层内数据波动尽可能小，层间数据差别尽可能大
【单选题】Why do Chinese people have fish in spring festival?
A.
Because fish is the most popular dish in China.
B.
Because fish is the most nutritious food in China.
C.
Because the Chinese word for "fish" is a homonym for the word "surplus".
D.
Because the Chinese word for "fish" is a homonym for the word "addition".
【简答题】口模长径比越大，出现熔体破裂的临界剪切速率越 。
【单选题】During the long course of history, the Chinese people have, working with dice, bravery and wisdom, created _________ beautiful homeland where all ethnic groups live in harmony, and developed ____...
A.
a, a
B.
/, the
C.
/, a
D.
a, the
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