【单选题】【消耗次数：1】
当a=1,b=3,c=5,d=4,执行完下面一段程序后x的值是:ifa<b)ifc<d)x=1;elseifa<c)ifb<d)x=2;elsex=3;elsex=6;elsex=7
①
18
②
2
③
3
④
6
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相关题目
【单选题】
假定所有变量均已正确说明，下列程序段运行后x的值是a=b=c=0;x=35;if!a)x--;elseifb);ifc)x=3;elsex=4;
①
34
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【简答题】
解线性方程组<img class="jc-formula" data-tex="\begin{ cases } x_{ 1 }+3{ x }_{ 2 }-{ 2x }_{ 3 }+{ x }_{ 4 }=1 \\ 2{ x }_{ 1 }+5{ x }_{ 2 }-3{ x }_{ 3 }+{ x }_{ 4 }=3 \\ -3{ x }_{ 1 }+4{ x }_{ 2 }+8{ x }_{ 3 }-2{ x }_{ 4 }=4 \\ 6{ x }_{ 1 }-{ x }_{ 2 }-6{ x }_{ 3 }+4{ x }_{ 4 }=2 \end{ cases }" src="https://huaweicloudobs.ahjxjy.cn/9D3F9AFD766D2E70840A2BC2711DEC75.png" style="vertical-align: middle;"/>.
【单选题】
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自反性、反对称性、传递性
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【单选题】
设a=5，b=6，c=7，d=8，则执行下列语句后，x的值为：______。
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300
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【简答题】
求解方程组<img class="jc-formula" data-tex="\begin{ cases } { x }_{ 1 }-2{ x }_{ 2 }+3{ x }_{ 3 }-{ x }_{ 4 }=1 \\ 3{ x }_{ 1 }-5{ x }_{ 2 }+5x_{ 3 }-3{ x }_{ 4 }=2 \\ 2{ x }_{ 1 }-3{ x }_{ 2 }+2{ x }_{ 3 }-2{ x }_{ 4 }=1 \end{ cases }" src="https://huaweicloudobs.ahjxjy.cn/D2F7DBEDF74F0DA535C0BD6A61FA9854.png" style="vertical-align: middle;"/>
【简答题】
求方程组<img class="jc-formula" data-tex="\begin{ cases } x_{ 1 }-{ x }_{ 2 }-{ x }_{ 3 }+{ x }_{ 4 }=0 \\ { x }_{ 1 }-{ x }_{ 2 }+{ x }_{ 3 }-3{ x }_{ 4 }=0 \\ { x }_{ 1 }-{ x }_{ 2 }-2{ x }_{ 3 }+3{ x }_{ 4 }=0 \end{ cases }" src="https://huaweicloudobs.ahjxjy.cn/D4C08D0A4459C36BE868755327686B0E.png" style="vertical-align: middle;"/>的全部解。
【简答题】
求如下方程组的全部解<img class="jc-formula" data-tex="\begin{ cases } { x }_{ 1 }+5{ x }_{ 2 }-{ x }_{ 3 }-{ x }_{ 4 }=-1 \\ x_{ 1 }-2{ x }_{ 2 }+{ x }_{ 3 }+3{ x }_{ 4 }=3 \\ 3{ x }_{ 1 }+8{ x }_{ 2 }-{ x }_{ 3 }+{ x }_{ 4 }=1 \\ { x }_{ 1 }-9{ x }_{ 2 }+3{ x }_{ 3 }+7{ x }_{ 4 }=7 \end{ cases }" src="https://huaweicloudobs.ahjxjy.cn/A62CC30A0D3B926B3452EB7F99DCE879.png" style="vertical-align: middle;"/>.
随机题目
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brevity
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directness
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Mardi and White Jacket
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The Bostonians and American Tragedy
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Common Sense
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Edgar Poe and James Cooper
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Hawthorne and Melville
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【判断题】
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正确
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错误
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Rationalism
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Romanticism
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Neoclassicism
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Enlightenment
【单选题】
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①
dignity
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behavior
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morality
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①
Thomas Hardy
②
Ezra Pound
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T. S. Eliot
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