[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f2Uw9GNswyrax_fH1TNuEX3L5lAIC1qCG8VTF6P3O8YA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":26,"type":40},[],"2023-09-27 11:23:18",98492174,[8,9],"正确","错误",{"courseId":11,"courseImg":12,"courseName":13},"837aa93137ce161cd81a44e7fd5d3090","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Feca5b89b415c581d574f62d2337daf4b.jpg","Python数据分析与应用","通过empty()函数创建的数组,该数组中没有任何的元素.( )",[16,28,37,41,46],{"answer":17,"createTime":18,"id":19,"options":20,"question":25,"source":26,"type":27},[],"2023-09-10 18:59:38",96743232,[21,22,23,24],"ndim","shape","size","dtype","下列选项中,用来表示数组维度的属性是( )","v1",0,{"answer":29,"createTime":18,"id":30,"options":31,"question":36,"source":26,"type":27},[],96743234,[32,33,34,35],"arr = np.array([1, 2, 3])","arr = np.array([[1, 2, 3], [4, 5, 6]])","arr = np.array([[1, 2], [3, 4]])","np.ones((3, 3))","下面代码中,创建的是一个3行3列数组的是( )",{"answer":38,"createTime":5,"id":6,"options":39,"question":14,"source":26,"type":40},[],[8,9],3,{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":26,"type":40},[],98492175,[8,9],"如果没有明确地指明数组中元素的类型,则默认为float64.( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":26,"type":51},[],98492176,[],"什么是矢量化运算",4]