【单选题】【消耗次数：1】
<img src="https://file.icve.com.cn/doc_public4/46/546/0B888AA53430E1B0B7EB0022A6492F3A.png" title="1.png" alt="1.png"/>
①
v(正)减小，v(逆)增大
②
k(正)减小，k(逆)增大
③
v(正)和v(逆)都减小
④
v(正)增加的倍数 v(逆)增加的倍数
参考答案：
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相关题目
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/4B28F6872BEE2E7B15BC1C6B7E692AB4.png title=OXVVT)[~2IF6V3DTGJ[_B$4.png alt=OXVVT)[~2IF6V3DTGJ[_B$4.png/>（ ）
①
<img src=https://huaweicloudobs.ahjxjy.cn/873A87A694529FBF9E61CECC8D32AD15.png title=7KL`R7UIL_P]DW0N[8EK[KI.png alt=7KL`R7UIL_P]DW0N[8EK[KI.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/0482F42FE70814EA365592BAB9C61ACA.png title=10J51VZQN9)TUXJX]Z(G$TI.png alt=10J51VZQN9)TUXJX]Z(G$TI.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/751D83F85DEEF3EB78C92369DD75A3B0.png title=DGXWNG[9S[S7]EF4KNDYBI9.png alt=DGXWNG[9S[S7]EF4KNDYBI9.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/B586A214C1A764A9FB5C483A9A8862A5.png title=LFZAH1[{@[OC455$C14(9JR.png alt=LFZAH1[{@[OC455$C14(9JR.png/>
【单选题】
已知有向图G=(V,E)，其中V={V1,V2,V3,V4,V5,V6,V7}，E={V1,V2V1,V3V1,V4V2,V5V3,V5V3,V6V4,V6V5,V7V6,V7}，G的拓扑序列是（ ）。
①
V1,V3,V4,V6,V2,V5,V7
②
V1,V3,V2,V6,V4,V5,V7
③
V1,V3,V4,V5,V2,V6,V7
④
V1,V2,V5,V3,V4,V6,V7
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/9A20256E9C1D7A87087EBA32A9695ECC.png title=)BYF~0G]%1Z%GXN}VH8K7V3.png alt=)BYF~0G]%1Z%GXN}VH8K7V3.png/>
①
0
②
1
③
<img src=https://huaweicloudobs.ahjxjy.cn/A91E2FC784670E89C6D73557255376F5.png title=F$NDG`@NJ]$_6I9{NY@}$GX.png alt=F$NDG`@NJ]$_6I9{NY@}$GX.png/>
④
不存在
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的邻域 N(v1) =
①
{v3, v4}；
②
{v2, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的闭邻域 N(v1) =
①
{v3, v4}；
②
{v2, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的先驱元集G -(v1) =
①
{v3, v4}；
②
{v1, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
设有向图D = áV, E?, 其中 V={v1, v2, v3, v4, v5}, E={áv4, v1?, áv1, v1?,áv1, v2?,áv1, v3?, áv3, v1?, áv5, v3?}，则v1的后继元集G +(v1) =
①
{v3, v4}；
②
{v1, v3,v4}；
③
{v1, v2, v3, v4}；
④
{v2,v3}。
【单选题】
<img src="https://file.icve.com.cn/doc_public4/722/995/B4AF8E38823574ED8E359E66C563A5A1.png" title="1.png" alt="1.png"/>
①
K1′K3
②
(K3)2/K1
③
2′K1′K2
④
K2/K1
【单选题】
设无向图G1 = áV1, E1?, 其中, V1 = {v1, v2, v3, v4, v5}, E1 = {(v1, v2), (v2, v3), (v3, v4), (v3, v3), (v4, v5)}，则v2的邻域 N(v2)为：
①
{v1, v2, v3}；
②
{v1, v3}；
③
{v1, v2, v3, v4, v5}；
④
{v2}。
【简答题】
作出平面ABCD的V面投影<img src="https://file.icve.com.cn/ssykt5/115/113/1CE1C586E3DA4B53B3D299F2985BE8EF.png"/>
随机题目
【单选题】
Can you go out with us for dinner this evening?
①
No, I already have plans
②
Thanks a lot but I’m busy tonight
③
No, I really don’t like being with you
④
I’m ill, so I shouldn’t go out for dinner
【单选题】
To _________ their new shampoo, they are selling it at half price for a month.
①
progress
②
proceed
③
promote
④
propose
【单选题】
I don’t want to talk about it now. I’m not in the __________ .
①
feeling
②
attitude
③
emotion
④
mood
【单选题】
Can I help you with the bag?
①
No, no. I can take it myself
②
Thank you
③
Sorry, you can’t
④
No, I’m all right
【单选题】
The license must be clearly __________ in the car windscreen.
①
spread
②
displayed
③
exposed
④
located
【单选题】
__________ my love of landscape, nothing could persuade me to spend another day in the Highlands.
①
But for
②
For all
③
Above
④
Except for
【单选题】
Food was in short __________ ; women stood in line for hours for a bucket of drinking water.
①
store
②
provision
③
reserve
④
supply
【单选题】
His parents __________ him the opportunity to go to university.
①
ignored
②
neglected
③
refused
④
denied