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【单选题】
河流的侵蚀作用可以形成多种地貌形态，以下不是河流侵蚀作用形成的地貌类型是A.
峡谷
B.
瀑布
C.
蛇曲
D.
三角洲
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反馈参考答案：
举一反三
【单选题】关于测量数据的随机误差的分布规律，下列说法正确的是
A.
随机误差总是服从正态分布
B.
有限次测量数据的随机误差服从正态分布
C.
有限次测量数据的随机误差需要用 t 分布进行统计处理
D.
无限次测量数据的随机误差服从t分布
【简答题】Animation(动画) means things which are lifeless come alive and move. Since earliest times, people have always been surprised by movement. But not until this century have we managed to take contro...
【简答题】People have long debated the essence（本质）of human nature．Some people think humans are born good．In San Zi Jing（Three Chara~er Classic），a Chinese children’s educational book from the 13th century, we re...
【简答题】如下图保压回路中,是利用( )阀实现保压功能的。
【简答题】A．The number of temples for the size of the population. B．The absence of wars and natural disasters. C．The belief that there are no evil spirits. D．The Chara population has no chief or other ruler.
【简答题】Chinese characters have played a significant r_______(1) in the development of the outstanding culture of the Chinese people. Chinese characters are one kind of the most a______(2) characters. In the ...
【简答题】用CSS设置盒子边框的属性名是( )
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