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He must have felt that I had a prejudice against him, which had been revealed from the expression in his eyes. So he went on with a smile. When a person improves their ways and learns to take pride in their work, a lifetime of happiness will come as a result. He did not allow frightening and hurting the weak, and he insisted the children play games in a fair and honest way in front of his store. But he had left me a piece of wisdom, which is very valuable to me, and which I will always remember — if you have inherited a prideful tradition, you must stick to the tradition and continue with it; if you haven't, then start building one now. This manual work of repairing shoes is something I am skilled at and I want to do a good job. Many people are not doing their duty these days, and their attitude toward work is wrong. He suffered severely from an illness that could be easily passed on from one person to another two weeks ago, and he died two days later. And, I remember very clearly his fine dark eyes, which were full of kind, happy, and humorous spirit. I took off my shoes and sat there, watching as he was ready to do some repair work on the shoes I'd given to him. Then I found myself hanging around his store or visiting the store every few days, just to chat with him because he would give me much joy.
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【判断题】机身和臂部的工作性能的优劣对机器人的负荷能力和运动精度影响很大
A.
正确
B.
错误
【单选题】下列属于水溶性维生素是( )过量摄入,不会引起中毒。
A.
维生素A
B.
维生素B族
C.
维生素D
D.
维生素E
【单选题】求函数y=sin3x的微分
A.
cos3xdx
B.
3sin3xdx
C.
3cos3xdx
D.
sin3xdx
【单选题】下列情况中,必须用到事后多重比较的是______。
A.
三个及其以上独立样本平均数差异的显著性检验
B.
同一因素三个不同实验处理下的方差齐性检验
C.
A×B(2×2)交互作用显著时,分析A因素在b 1 条件下的简单效应
D.
两个样本平均数差异的显著性检验
【单选题】求y= 的微分dy
A.
dy=6x dx
B.
dy=6x
C.
dy= dx
D.
dy=
【简答题】若u是x的函数,可微分足够多次,求微分到指定阶:y=lnu,求d 3 y
【简答题】求下列函数的高阶微分:(1)y=√1+x^2,求d^2y;(2)y=x^x,求d^2y求下列函数的高阶微分:
【单选题】下列属于水溶性维生素是()
A.
维生A
B.
维生素D
C.
维生素B1
D.
维生素E
【简答题】若u是x的函数,可微分足够多次,求微分到指定阶:y=u 2 ,求d 10 y.
【单选题】三个样本均数比较方差分析的应用条件是( )。
A.
样本为正态分布,
B.
总体为正态分布,
C.
样本为正态分布,
D.
总体为正态分布,
E.
满足上述条件之一即可
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