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carve means to cut shapes out of wood or stone.()
此题为判断题(对,错)。
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Lots of things are made of_____.We must protect_____.A.woods;woodsB.wood;woodC.wood;woodsD.woods;wood
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Just as the clothes a person wears , the food he eats and the friends with whom he spends his time, his house _______ his personality.A. resemblesB. strengthensC. reflectsD. shapes
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6、对于下述命令,如何利用pipe符号进行改写: by_cut <- group_by(diamonds, cut) count_cuts <- mutate(by_cut, N = n())A.count_cuts <- diamonds %>% group_by(cut) %>% mutate(N = n())B.count_cuts <- diamonds %>% mutate(N = n()) %>% group_by(cut)C.count_cuts <- diamonds %<% group_by(cut) %<% mutate(N = n())D.count_cuts <- diamonds %<% mutate(N = n()) %<% group_by(cut)
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假设Shape为抽象类,则下面哪种用法是错误的()A.Shape *s;B.void function(Shape *s);C.void function(Shape s);D.Shape s;
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选择下列计算结果 cut2[x_]:=If[x<-1,-1,If[x<1,x,1]] {cut2[-1],cut2[0],cut2[2]} 或 cut2/@{-1,0,2}A.{-1,0,2}B.{-1,1,2}C.{-1,0,1}D.{-1,1,1}
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选择下列计算结果 cut1[x_]:=If[x>11,-1,1] {cut1[-1],cut1[12],cut1[abc]}A.{1,-1,If[abc>11,-1,1]}B.{1,-1,1}C.{-1,1,If[abc>11,-1,1]}D.{1,-1-1]}
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