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【简答题】
我们有如下代码:import numpy as np; x = np.array([[86, 2, 50],[67, 51, 50],[49, 22, 34],[83, 54, 42]]);rows = np.array([[0,0],[3,3]]); cols = np.array([[0,2],[0,2]]); y = x[rows,cols];print (y) 运行后y的内容是什么?仅输入数值,用逗号隔开!。
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【简答题】Nomenclature of N 2 O 5
【单选题】When she said 'It takes hold of you, or it leaves you perfectly cold', Willa Gather meant ______.
A.
you either love the place or hate it
B.
you decide either to stay or to leave
C.
some find the place warm others find it cold
D.
some find the place peaceful others find it wild
【简答题】When families gather for Christmas dinner, some will stick to formal traditions dating back to grandma’s generation. Their tables will be set with the good dishes and silver, and the dress code will b...
【简答题】电感元件的正弦交流电路中，电压有效值不变，当频率增大时，电路中电流将() A增大 B减小 C不变 D恒为零
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