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数学套题期末4第四套
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6点,8边
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68、如图所示,以下说法正确的是 ( ).
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34、设A是 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/111984" ＼* MERGEFORMATINET 矩阵,如果 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/312248" ＼* MERGEFORMATINET ,则( )
(1.0)
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4、
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54、 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/29924b7d5d962fe7587f9bc51de93ec0.png" ＼* MERGEFORMATINET
(1.0)
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35、下面不是阶梯型矩阵的是( )
(1.0)
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63、在一个有向图中,所有顶点的出度之和等于所有顶点的入度之和的( )倍。
(1.0)
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18、 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/cff312e9958b2e5f345a654f2f913a78.png" ＼* MERGEFORMATINET 展开式种 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/1680a5a303521eb32b18d65f8facd0f6.png" ＼* MERGEFORMATINET 项的系数为_________( )
( )
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30、下列向量组是线性无关的是( )
(1.0)
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22、向量 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/73357b760f571c259794ef21e9f7b9ef.png" ＼* MERGEFORMATINET 先逆时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/29250" ＼* MERGEFORMATINET ,再顺时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/463231" ＼* MERGEFORMATINET 得到的向量为( )
(1.0)
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6点,8边

C. 　

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68、如图所示,以下说法正确的是 ( ).

A. 　 e是割点

B. 　 {a, e}是点割集

C. 　 {b, e}是点割集

D. 　 {d}是点割集

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34、设A是 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/111984" ＼* MERGEFORMATINET 矩阵,如果 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/312248" ＼* MERGEFORMATINET ,则( )
(1.0)

A. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/22036fe43827ed0db23d177e31c3a2b4.png" ＼* MERGEFORMATINET

B. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/b2438085c7f52fc89bd82d931934be3d.png" ＼* MERGEFORMATINET

C. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/5bfacced11915d1e48dda63d54b5fc24.png" ＼* MERGEFORMATINET

D. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/33a779319651bcd1abbd76889f388a9f.png" ＼* MERGEFORMATINET

https://www.shititong.cn/cha-kan/shiti/0005b877-74f2-26d8-c0ce-60519723ce00.html
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4、
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54、 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/29924b7d5d962fe7587f9bc51de93ec0.png" ＼* MERGEFORMATINET
(1.0)

A. 　 1

B. 　 2

C. 　 3

D. 　 -1

https://www.shititong.cn/cha-kan/shiti/0005b877-74f2-f5e0-c0ce-60519723ce00.html
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35、下面不是阶梯型矩阵的是( )
(1.0)

A. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/cbfa63facc47534b5791c0edb3985858.png" ＼* MERGEFORMATINET

B. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/f00401a0806543e0c700b626719028d3.png" ＼* MERGEFORMATINET

C. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/b68a546fa6a2abd42fdf096156b763f0.png" ＼* MERGEFORMATINET

D. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/d7b17fc70b316cb4a0d33d9111f5a0fe.png" ＼* MERGEFORMATINET

https://www.shititong.cn/cha-kan/shiti/0005b877-74f2-3290-c0ce-60519723ce00.html
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63、在一个有向图中,所有顶点的出度之和等于所有顶点的入度之和的( )倍。
(1.0)

A. 　 1/2

B. 　 2

C. 　 1

D. 　 4

https://www.shititong.cn/cha-kan/shiti/0005b877-74f3-0d50-c0ce-60519723ce00.html
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18、 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/cff312e9958b2e5f345a654f2f913a78.png" ＼* MERGEFORMATINET 展开式种 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/1680a5a303521eb32b18d65f8facd0f6.png" ＼* MERGEFORMATINET 项的系数为_________( )
( )
https://www.shititong.cn/cha-kan/shiti/0005b877-74f3-a1c0-c0ce-60519723ce00.html
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30、下列向量组是线性无关的是( )
(1.0)

A. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/8d20d56c6127cc96b7e82bf3b108e066.png" ＼* MERGEFORMATINET

B. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/45716c0b86036041d966258ffc59f340.png" ＼* MERGEFORMATINET

C. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/d44ccd518c7d8ce91bbdece690509d7a.png" ＼* MERGEFORMATINET

D. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/13176250575a997b8b0dfa7183b109eb.png" ＼* MERGEFORMATINET

https://www.shititong.cn/cha-kan/shiti/0005b877-74f1-d0e8-c0ce-60519723ce00.html
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22、向量 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/73357b760f571c259794ef21e9f7b9ef.png" ＼* MERGEFORMATINET 先逆时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/29250" ＼* MERGEFORMATINET ,再顺时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/463231" ＼* MERGEFORMATINET 得到的向量为( )
(1.0)

A. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/73357b760f571c259794ef21e9f7b9ef.png" ＼* MERGEFORMATINET

B. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/6d0b6e9f4255e23716df5adbbacccc7b.png" ＼* MERGEFORMATINET

C. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/62e4261dfaa7c90b847194de5d1bc7eb.png" ＼* MERGEFORMATINET

D. 　 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/e749a2c6979ee62ee10ddca7dfe12ba9.png" ＼* MERGEFORMATINET

https://www.shititong.cn/cha-kan/shiti/0005b877-74f1-6b58-c0ce-60519723ce00.html
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