The Second Industrial Revolution turned Britain into the “workshop of the world”.
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The Third Industrial Revolution took place after World War Ⅰ.
A. 对
B. 错
元组 t=(1,(2,3),(4,[5,6,7,])) 的元素个数(即 len(t))为()
A. 7
B. 4
C. 3
D. 6
max((1,2,3)*2) 的值是:_____________