[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fS5UIiyfqcYuD_gUHSMOBSR7yhw243KOhwRcHw4cHk8Y":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":24,"type":97},[],"2023-12-13 20:40:16",113788198,[],{"courseId":9,"courseImg":10,"courseName":11},"6d41a0c499ef677a0971178665c16248","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","生药学","天麻中( )有对神经细胞损伤的保护作用,还有抗自由基和保护细胞膜作用",[14,26,34,44,54,62,71,76,84,92],{"answer":15,"createTime":16,"id":17,"options":18,"question":23,"source":24,"type":25},[],"2023-12-03 19:55:05",107953671,[19,20,21,22],"0.5","0.25","1","0.75","已知离散型随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe22a13f7edcffe98b7a922d3fe5be3b8.png\">的分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fea35e65aff8133c2c2da392b08c643e4.png\">,且\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F784ddd09ffb0ac2f95275af4f57b2df5.png\">的,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdf38fcaa818086239a028beee806e06b.png\">为( )","v1",0,{"answer":27,"createTime":16,"id":28,"options":29,"question":33,"source":24,"type":25},[],107953674,[30,31,21,32],"1\u002F2","1\u002F4","2\u002F3","设二维随机变量(X,Y)的联合概率密度函数为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdc256d79e08cb51cfc75c8b091bce4cf.png\">,则P{X+Y&lt;2}=( )",{"answer":35,"createTime":36,"id":37,"options":38,"question":43,"source":24,"type":25},[],"2023-12-03 19:55:04",107953676,[39,40,41,42],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd8d757cb70d79fa9469894ca2a246435.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0a6cc51a22a64aa9ad13f72c3bfbe26f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa2bf78b86183aaa60dabf18a3d0df9c6.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5a9263666608cb2c1ef366899a9185a2.png\">","设二维随机变量(X,Y)的分布函数为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F628a94b6afa3d7b780381cbc129c406e.png\">,-&infin;&lt;x&lt;+&infin;,-&infin;&lt;y&lt;+&infin;,则参数A=( )",{"answer":45,"createTime":46,"id":47,"options":48,"question":53,"source":24,"type":25},[],"2023-11-26 18:06:47",107953679,[49,50,51,52],"0.7","0.4","0.3","0.6","设二维随机变量(X,Y)的联合分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F231fe8e7f801a58b916bff5ac4bd9b4c.jpg\">,则P{X=0}=( )",{"answer":55,"createTime":16,"id":56,"options":57,"question":61,"source":24,"type":25},[],107953681,[58,59,19,60],"0.125","0.375","0.625","已知离散型随机变量(X,Y)的分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9557ff5e1dcc46e6ae857efac16c5237.png\">,则 P{2&le;X&le;3,1&lt;Y&le;2}为( )",{"answer":63,"createTime":46,"id":64,"options":65,"question":70,"source":24,"type":25},[],107953685,[66,67,68,69],"2\u002F5","4\u002F5","3\u002F5","1\u002F5","设二维随机变量(X,Y)的联合概率密度函数为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb8f883d7cf5e27eac07dd01f17a93d69.png\">,则P{X&gt;Y}=( )",{"answer":72,"createTime":16,"id":73,"options":74,"question":75,"source":24,"type":25},[],107953689,[22,20,21,19],"已知离散型随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe22a13f7edcffe98b7a922d3fe5be3b8.png\">的分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fea35e65aff8133c2c2da392b08c643e4.png\">且 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc31276924e707acab741ad2dbb43277e.png\">,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03e13c03f211e99c8562606bc1606af3.png\">为( )",{"answer":77,"createTime":16,"id":78,"options":79,"question":83,"source":24,"type":25},[],107953691,[80,81,82,69],"1\u002F15","4\u002F15","7\u002F30","已知离散型随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe22a13f7edcffe98b7a922d3fe5be3b8.png\">的分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63039e43e8288979264007cdffae59be.png\">,且\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcce94e085627cc2f0f76cd1ae56432ee.png\">,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe92e9f4d33a51e1283c192baf812ee9a.png\">为( )",{"answer":85,"createTime":16,"id":86,"options":87,"question":91,"source":24,"type":25},[],107953693,[88,69,89,90],"5\u002F20","1\u002F10","3\u002F20","设二维随机变量(X,Y)的联合分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5573b444637a2b48f11ffa2b50089512.jpg\">,则P{X+Y=1}=( )",{"answer":93,"createTime":16,"id":94,"options":95,"question":96,"source":24,"type":25},[],107953696,[20,60,19,21],"已知二维离散型随机变量(X,Y)的分布律为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48b464d09a3e56453d2d93ef02603414.png\">, 则P{X+Y&le;3}=( )",2]