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大工2020年春《运筹学》在线作业3学习资料答案
【奥鹏】-大连理工20春《运筹学》在线作业3
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一、单选题 (共 5 道试题,共 40 分)
【题目】典型的无概率决策准则,不包括( )。
[A.]乐观准则
[B.]折中准则
[C.]等可能准则
[D.]最大后悔值准则
正确的选择是：D
【题目】( )是指决策者在情况不明时,对自然状态抱最乐观的态度,从最好的自然状态出发,先从各方案中挑选最大收益值,然后从这些最大收益值中挑选出最优决策方案。
[A.]乐观准则
[B.]折中准则
[C.]等可能准则
[D.]后悔值准则
正确的选择是：A
【题目】( )就是研究对策行为中斗争各方是否存在着最合理的行动方案,以及如何找到这个合理的行动方案的数学理论和方法。
[A.]博弈论
[B.]运输问题
[C.]最大流问题
[D.]最短路问题
正确的选择是：A
【题目】决策树中通常用方框代表( )。
[A.]决策点
[B.]方案枝
[C.]状态
[D.]损益值
正确的选择是：A
【题目】( )就是先计算各备选方案的期望值,然后按照决策目标选择最优行动方案。
[A.]乐观准则
[B.]折中准则
[C.]等可能准则。
运筹学网上作业作业名称：2022年秋季运筹学（本）网上作业1出卷人：SA作业总分：100通过分数：60起止时间：2022-11-114:34:26至2022-11-116:59:39学员姓名：dong某y学员成绩：95标准题总分：100标准题得分：95详细信息：题号:1题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:图形:A、B、C、D、标准答案:B学员答案:A本题得分:0题号:2题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:1915年谁首先推导出存贮论的经济批量公式A、ErlangB、HarriC、ShewhartD、Dantzig标准答案:B学员答案:B本题得分:5题号:3题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:对于基B，令所有非基变量为0，满足A某=b的解，称为B所对应的A、可行解B、最优解C、基本解D、退化解标准答案:C学员答案:C本题得分:5题号:4题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:原问题的检验数对应对偶问题的一个A、基本可行解B、最优解C、基本解D、不知标准答案:C学员答案:C本题得分:5题号:5题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:图形:A、B、C、D、标准答案:C学员答案:C本题得分:5题号:6题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:1917年谁首先提出了排队论的一些著名公式A、ErlangB、HarriC、ShewhartD、Dantzig标准答案:A学员答案:A本题得分:5题号:7题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:某、Y分别是原问题和对偶问题的可行解，且C某=Yb，则某、Y分别是原问题和对偶问题的A、基本可行解B、最优解C、基本解D、不知标准答案:B学员答案:B本题得分:5题号:8题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:线性规划的标准型中C称为A、技术向量B、价值向量C、资源向量D、约束矩阵标准答案:B学员答案:B本题得分:5题号:9题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:管梅谷在1962年首先解决了哪类运筹学问题A、随机规划问题B、中国邮路问题C、欧拉图问题D、四色问题标准答案:B学员答案:B本题得分:5题号:10题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:5内容:1947年谁得到了线性规划的单纯形法A、ErlangB、HarriC、ShewhartD、Dantzig标准答案:D学员答案:D本题得分:5题号:11题型:多选题（请在复选框中打勾，在以下几个选项中选择正确答案，答案可以是多个）本题分数:5内容:我国运筹学的应用是始于A、重工业B、建筑业C、纺织业D、服务业标准答案:BC学员答案:BC本题得分:5题号:12题型:多选题（请在复选框中打勾，在以下几个选项中选择正确答案，答案可以是多个）本题分数:5内容:研究模型有三种基本形式A、形象模型B、抽象模型C、模拟模型D、数学模型标准答案:ACD学员答案:ACD本题得分:5题号:13题型:多选题（请在复选框中打勾，在以下几个选项中选择正确答案，答案可以是多个）本题分数:5内容:运筹学研究问题的特点表现为A、综合性B、跨学科性C、实用性D、专业性标准答案:ABC学员答案:ABC本题得分:5题号:14题型:是非题本题分数:5内容:线性规划的最优基是唯一的。
16春天大《运筹学》在线作业一《运筹学》在线作业一一、单选题（共 40 道试题，共 100 分。
）1. 关于树的概念，叙述不正确的是（）. 树中的线数等于点数减1. 树中再添一条连线后必定含圈. 树中删去一条连线后不连通. 树中两点之间的通路可能不唯一正确答案：2. 下列关于期望值准则的描述不正确的是（）. 基于平均收益方案选择的准则. 不能根据损失期望值大小选择. 可分为最大期望收益准则和最小期望损失准则. 是对方案在各种状态下的期望值的评价正确答案：3. 标准的M/M/1模型的条件不包括（）. 顾客源是无限的. 先到先服务. 多服务台. 单服务台正确答案：4. 对LP问题标准型，利用单纯形法求解时，每做一次换基迭代，都能保证它相应的目标函数值Z必为（）. 增大. 不减少. 减少. 不增大正确答案：5. 下列假设不是经济批量库存模型的是（）. 需求量均匀. 提前量为零. 允许缺货. 瞬时补充正确答案：6. 库存管理的分类法中，对类货物的管理应（）一些。
. 严格. 粗略. 宽松. 折衷正确答案：7. 一个弧上有某种“流转物”流动的有向图称为. 图. 树. 网络. 路正确答案：8. 某企业按经济订货量对某产品每年订货三次，每次订货费用为500元，在没有安全库存的情况下，库存保管总费用为（）. 1500元. 750元. 500元. 250元正确答案：9. 设某企业年需1800吨钢材，分三次订货，则平均库存量为（）. 1800吨. 900吨. 600吨. 300吨正确答案：10. 求解线性规划模型时，引入人工变量是为了（）. 使模型存在可行解. 确定一个初始的基可行解. 该模型标准化.正确答案：11. 图有支撑树的充要条件是此图为（）. 无向图. 有向图. 赋权图. 连通图正确答案：12. 在算出经济订货量后，根据供应商提出的数量折扣，又对订货量进行修改，则全年库存保管非将（）. 增加. 减少. 不变. 可能增加或减少正确答案：13. 关于线性规划模型，下面（）叙述正确. 约束方程的个数多于1个. 求极大值问题时约束条件都是小于等于号. 求极小值问题时目标函数中变量系数均为正. 变量的个数一般多于约束方程的个数正确答案：14. 线性规划问题的标准型最本质的特点是（）. 目标要求是极小化. 变量和右端常数要求非负. 变量可以去任意值. 约束条件一定是等式形式15. （）表示当过程处于某阶段的某个确定状态时，可以作出的选择或决定. 状态. 决策. 状态转移. 指标函数正确答案：16. 动态规划的研究对象是（）决策问题. 状态. 顺序性. 逆序. 单阶段正确答案：17. 两点之间带箭头的联线称为（）. 边. 弧. 图. 链正确答案：18. 关于图的概念，以下叙述（）不正确. 图的连线可以有向也可无向. 图中的连线可以标注权. 结点数等于连线数的图必含圈. 结点数等于连线数的图必连通正确答案：19. 排队规则的类型不包括（）. 损失制. 等待制. 混合制. 自主制20. 下列分类不是按照决策的自然状态划分的是（）. 决策树. 确定型决策. 风险型决策. 完全不确定型决策正确答案：21. 库存设备一般以（）为单位进行管理. 台套. 件. 台. 批正确答案：22. 关于图的概念，以下叙述（）正确. 图中的连线表示对象，结点表示衔接关系. 图中点表示对象，连线表示点之间的关系. 图中任意两点间必有连线. 图中线数必定等于点数减一正确答案：23. 某个线性规划模型的所有可行解中，全部变量都是正数或0，原因是该问题具有（）. 目标函数. 求极大值的要求. 资源约束条件. 变量非负条件正确答案：24. （）表示各个阶段开始时所处的自然状况或客观条件。
大工22春《运筹学》在线作业1-00001试卷总分:100 得分:100一、单选题(共 5 道试题,共40 分)1.线性规划的四条基本假设不包括( )。
A.比例性B.连续性C.确定性D.发散性答案:D2.下列有关运筹学的说法不正确的为( )。
A.是管理学的简称B.涉及到应用数学、形式科学、经济学、管理学等学科C.采用数学建模、统计学和计算方法等来求解复杂问题，以达到最优和近似最优的解决方案D.利用科学的管理方法，为管理人员达到管理目标提供决策支持答案:A3.数学规划的研究对象为( )。
A.数值最优化问题B.最短路问题C.整数规划问题D.最大流问题答案:A4.( )是解决多目标决策的定量分析的数学规划方法。
A.线性规划B.非线性规划C.目标规划D.整数规划答案:C5.数学规划模型的三个要素不包括( )。
A.决策变量B.目标函数C.约束条件D.最优解答案:D二、判断题(共15 道试题,共60 分)6.线性规划基本假设中的可加性是指线性规划中所有目标函数和约束函数中的系数都是确定的常数,不含随机因素。
答案:错误7.家庭中的存储储备品,工厂储备原材料,商店存储商品等都是存储问题。
答案:正确8.线性规划的求解方法包括图解法、单纯形法、椭球法、内点法等。
答案:正确9.运筹学是运用数学方法,对需要进行管理的问题统筹规划,为决策机构进行决策时提供以数量化为基础的科学方法。
答案:正确10.整数规划问题中的整数变量可以分为一般离散型整数变量和连续型整数变量。
答案:错误11.决策变量、目标函数和约束条件是数学规划模型的三个要素,若目标函数和约束条件均为线性的数学规划问题称为非线性规划。
答案:错误12.数学规划的应用极为普遍,它的理论和方法已经渗透到自然科学、社会科学和工程技术中。
答案:正确13.线性规划基本假设中的连续性要求每个决策变量在目标函数和约束函数中,其贡献与决策变量的值存在直接比例性。
答案:错误14.线性规划可行域的顶点定是最优解。
约翰骑马去睡帐篷去钓鱼骑自行车的作文英语全文共6篇示例，供读者参考篇1John's Awesome Outdoor AdventuresHi, my name is John and I'm 8 years old. I just had the best weekend ever! My mom and dad took me camping and we did so many fun outdoor activities. I can't wait to tell you all about it.On Friday after school, we packed up the car with our tent, sleeping bags, fishing rods, bike, and a bunch of other camping stuff. We drove for a couple hours until we made it to Green Valley Campground. It's right next to this huge lake with crystal clear blue water. There were lots of other families there too, pitching their tents and setting up camp.As soon as we arrived, I helped my dad put up our big green tent. It was kind of tricky getting all the poles to fit together right, but we got it done. Then we blew up our air mattresses and rolled out our sleeping bags inside. Our campsite was right near the edge of the woods and had a fire pit for making s'mores!After we were all set up, we decided to go for a bike ride around the campground before it got dark. My mom pulled our bikes out of the car and I hopped on mine. I can ride without training wheels now! We pedaled all along the paved trail that loops around the whole campground. I saw squirrels scampering across the path and birds chirping in the trees. The fresh air smelled so nice and piney.When we got back to our campsite, it was time to cook dinner over the campfire. My dad gathered up some sticks and branches and got the fire started. We roasted hot dogs and made foil packet potatoes with butter, cheese, and bacon bits. They were absolutely delicious! As we ate, we could hear a family of raccoons rummaging around nearby. A few curious deer even came right into our campsite!Once it got dark, we made s'mores for dessert. There's nothing better than gooey roasted marshmallows and melty chocolate smooshed between two graham crackers. Yum! Afterwards, we told ghost stories and looked at the stars. I could see the Milky Way stretching across the night sky. It looked like a glittery path in the dark.The next morning, I woke up to sunlight peeking through the tent and the chirping of birds all around. We cooked bacon,eggs, and hash browns on our camping stove for breakfast. I stuffed myself until I could hardly move!Then it was time for my favorite part – fishing! We grabbed our rods and a bucket of worms and headed down to the lake. My dad helped me put a juicy worm on my hook and I cast my line out as far as I could. I watched my bobber carefully, waiting for it to start wiggling.After about 20 minutes, I felt a huge tug and my line started zipping across the water! I quickly reeled it in and pulled out the biggest largemouth bass I've ever seen. It must have been 16 inches long! My dad took a picture of me grinning hugely and holding up my catch before we released it back into the lake.Over the next couple hours, I caught five more fish - two bluegill, a crappie, and two more bass. My dad didn't have as much luck as me though. I guess I was the better fisherman!For lunch, we fired up the grill and cooked the fish I had caught along with some corn on the cob, beans, and potato salad from home. The fresh fish was super flaky and delicious, especially with a squeeze of lemon.In the afternoon, we went for another bike ride to explore more of the trails around the lake and through the woods. Wesaw bright blue jays, towering pine trees, and some cool rock formations. My legs were getting pretty tired from all the pedaling by the time we made it back to camp!After dinner, we played flashlight tag around the campsites before having more s'mores and stargazing. I even got to drink some hot chocolate this time. When we finally crawled into our sleeping bags around 10 pm, I was completely tuckered out.The next morning after breaking down our tent and packing up the car, I felt sad to leave Green Valley Campground. I had so much fun being outdoors, going fishing, riding my bike, and eating campfire food. I can't wait for our next camping trip!Being out in nature with my family was the best. We made so many awesome memories together. If you ever get a chance to go camping, I highly recommend it. Just make sure you pack plenty of snacks to fuel all your adventures!篇2John's Awesome Summer AdventuresSummer vacation was finally here and I was so excited! My friend John invited me over to his house to play and his mom said we could go on some fun adventures during the day. John'sfamily has a small horse ranch out in the country, so we got to do all sorts of cool outdoor activities.The first big adventure was when John taught me how to ride horses! I had never been on a horse before, so I was a little nervous at first. But John's horse Buddy was very friendly and calm. John showed me how to brush Buddy, put on his saddle and bridle, and how to get up on his back. Riding was a little wobbly at first, but once I got the hang of it, it was so much fun! We went riding all around the ranch trails, trotting and cantering through the fields. I even got to practice jumping over some small logs and streams. By the end of the day, I felt like a real cowboy!A few days later, we went camping out in the woods near John's house. We packed up a big tent, sleeping bags, a camping stove, and lots of snacks and supplies into John's dad's pickup truck. Setting up the tent was tricky but John's dad helped us get it all put together properly. Once it was all set up, we got to roast hot dogs and make s'mores over the campfire! We told spooky stories and looked up at the bright stars in the night sky. Sleeping in the tent was amazing – I loved listening to the sounds of nature all around us as I drifted off to sleep.The next morning we woke up early to go fishing down at the creek. John's dad helped us put worms on our fishing hooks and showed us how to cast our lines out into the water. We had to be very patient, but eventually I felt a huge tug on my line! I reeled and reeled, and finally pulled in a big bass! John and I spent the whole morning catching bluegill, bass, and catfish. We even got to fry up the fish for lunch over the campfire. It was the most delicious fish I had ever tasted!On our last adventure day, we went on a awesome bike ride around John's neighborhood. John had a cool dirt bike that could go really fast! I just had a regular bicycle, but John showed me all the best trails to ride on through the woods. We jumped over fallen logs, splashed through muddy puddles, and raced each other down the hills. A couple times I got a little muddy when I wiped out, but it was still super fun! By the time we got back home, we were totally worn out but grinning from ear to ear after our exciting bike ride.That summer hanging out with my best friend John was incredible. We had so many awesome outdoor adventures that I'll never forget. I can't wait until next summer so we can go on even more fun trips! Maybe we'll get to go whitewater rafting or climb a mountain next time. John's family sure knows how tohave a blast exploring nature. I'm so lucky to have a friend like him to show me all the amazing outdoor activities you can do. It was the best summer ever!篇3John's Awesome Outdoor AdventureMy friend John is the luckiest kid ever! Last summer, his parents took him on the coolest outdoor adventure. I'm going to tell you all about the awesome things he got to do.First, they went camping in the mountains. John's dad has a big tent that can fit their whole family. It's hunter green and has two rooms - one for John and his little sister, and one for their parents. John helped set up the tent by pounding the stakes into the ground. Then he gathered sticks and logs for the campfire.At night, they roasted hot dogs and marshmallows over the fire. The marshmallows got all gooey and melty. John said they were delicious! His favorite part was telling ghost stories around the campfire with his family. His dad is really good at making spooky ghost noises. John tried not to get too scared, but he admitted the stories gave him goosebumps.They slept in their cozy sleeping bags inside the tent. John said it was really cold in the morning, but he loved unzipping the tent and breathing in the fresh, crisp mountain air. For breakfast, they cooked bacon and eggs over the campfire. Yum!After they ate, John went exploring around the campsite. He found a cool hiking trail and followed it up the mountain a little way. He saw a deer eating leaves off a bush! The deer wasn't scared of John at all. He got to watch it for a few minutes before it bounded off. On the trail, John also found feathers from different birds and some really neat-looking rocks.On the second day of camping, they went fishing at a big lake nearby. John had been fishing a couple times before, but never at a lake this huge! His dad helped him put a juicy worm on the hook. Then they found a good spot on the shore and cast their lines out.John got a bite right away! He reeled and reeled, struggling to pull it in. When he finally got the fish up on the bank, it was a huge rainbow trout - the biggest fish John had ever caught! His dad was really impressed and took a photo of John holding up his prize catch. That night, they cooked the trout over the campfire. According to John, it was the most delicious fish he'd ever tasted.On their last day of camping, John's family went on a long bike ride around the campground's trails. John is a great biker and he led the way, racing down the hills and kicking up clouds of dust. The trails wound through the forest, over little creeks and past fields full of wildflowers.At one point, they stopped to watch a huge bald eagle soaring high overhead. John said he had never seen anything so magnificent. The eagle's massive wings stretched out what looked like ten feet wide! After watching the eagle for a while, they got back on their bikes and kept exploring.Eventually, they came to the perfect picnic spot - a grassy meadow right next to a sparkling stream. They parked their bikes and had a yummy trail lunch of sandwiches, fruit, and granola bars. John dipped his feet in the cool stream water and saw little minnows darting around. What a relaxing way to end their camping trip!On the drive home, John couldn't stop talking about all the amazing outdoor adventures he'd had. He told me he can't wait to go camping again next summer. I'm super jealous of all the cool stuff he got to do! Camping seems like a ton of fun, especially if you get to go fishing, biking, and see incredible wildlife like John did. I definitely want to plan a camping trip formy family this year after hearing about John's awesome outdoor adventure!篇4Certainly! Here's a 2000-word English essay about John riding a horse, going camping, fishing, and cycling, written from the perspective of an elementary school student:John's Awesome AdventuresHi there! My name is John, and I'm super excited to tell you all about my amazing adventures. Get ready for an awesome story filled with horseback riding, camping, fishing, and cycling. It's going to be epic!First up, let me tell you about the time I went horseback riding. It was a sunny day, and I woke up feeling like a cowboy. My parents had promised to take me to a ranch, and I couldn't wait! When we got there, I met the coolest horse ever. His name was Thunder, and he was this massive brown stallion with a mane that looked like it was made of silk. The ranch hand helped me climb onto Thunder's back, and let me tell you, I felt like a king!At first, I was a little wobbly, but Thunder was so patient with me. We started off at a slow walk, and I held onto the reins tightly. Once I got the hang of it, we picked up speed and started trotting. The wind was whipping through my hair, and I felt like I was flying! We even got to gallop for a bit, and let me tell you, it was the most exhilarating thing ever.After our horseback riding adventure, it was time for camping! My family and I packed up our gear and headed out to the woods. We found the perfect spot by a beautiful lake and set up our tent. It was so much fun helping my dad pitch the tent and gather firewood. Once we had everything set up, we roasted marshmallows and told spooky stories around the campfire. I even got to sleep in the tent, which was like having a sleepover in the great outdoors!The next morning, I woke up to the sound of birds chirping and the sun peeking through the trees. My dad had a surprise for me – we were going fishing! We grabbed our rods and headed down to the lake. My dad showed me how to bait the hook and cast the line. At first, I didn't catch anything, but then I felt a huge tug on my line. I reeled and reeled, and would you believe it, I caught a massive trout! It was almost as big as me! We took apicture with my catch before gently releasing it back into the lake.After our fishing adventure, we packed up our camping gear and headed home. But the fun wasn't over yet! My parents had one more surprise for me – they got me a brand new bicycle! I was over the moon. As soon as we got home, I hopped on my bike and started pedaling around the neighborhood. The wind was whipping through my hair, and I felt like I was flying again. I even got to practice riding without training wheels!Overall, it was the most amazing few days of my life. I got to do so many cool things – horseback riding, camping, fishing, and cycling. I can't wait for my next big adventure. Who knows what exciting things I'll get to do next?Well, that's my story! I hope you had as much fun reading about my adventures as I did experiencing them. Until next time, stay awesome, and never stop exploring!篇5John's Big AdventureMy friend John is the luckiest kid I know! This summer, he got to go on the most amazing adventure with his family. Theywent camping, fishing, rode bikes, and did all sorts of fun outdoor activities. I'm so jealous! Let me tell you all about John's incredible trip.It started when John's dad said they were going on a camping trip over summer vacation. John was really excited because he had never gone camping before. His mom and dad rented a big tent and bought sleeping bags, camp stoves, and all the gear they would need. They also got a brand new fishing rod just for John!The first morning of their trip, they woke up bright and early to pack everything into their car. John's little sister Mary helped too, even though she's only 5 years old. She was really good at rolling up the sleeping bags tightly. With the car all loaded up, they drove for what felt like forever to get to the campground in the mountains.When they arrived, John's dad picked out the perfect spot to pitch their tent. It was right near a beautiful lake with tall trees all around. As soon as the tent was set up, John grabbed his fishing rod and ran down to the water. He had been looking forward to fishing so much! His dad helped him put a worm on the hook and cast the line out into the lake.At first, John didn't catch anything. But then, there was a huge tug on the line! John reeled it in as fast as he could. To his surprise, he had caught a massive trout! It was almost as big as his sister Mary. John's dad quickly took a picture before throwing the fish back in the water. That night for dinner, they cooked hot dogs and baked potatoes over the campfire. They were the most delicious hot dogs John had ever tasted.The next morning, John's family went on a long hike through the forest. Mary got tired after a little while, so John's dad had to carry her on his shoulders. But John marched on bravely, climbing over rocks and fallen trees. He got to see all sorts of cool plants and critters, like fuzzy caterpillars and darting chipmunks. When they reached a clearing at the top of a hill, the view took John's breath away. You could see the whole valley stretched out below, with the winding river sparkling in the sunlight.After their big hike, John and his dad got to go mountain biking on some trails near their campsite. John was a little nervous at first since he had just learned to ride a bike without training wheels. But with his dad leading the way, he quickly got the hang of it. They rode over bumps and around tight corners for what felt like hours, the wind whipping through their hair.John had never had so much fun! When they got back to the tent, his legs were worn out but he had the biggest smile on his face.That night after eating s'mores around the campfire, John's family lay out under the stars. His mom pointed out all the constellations, like the Big Dipper, Orion, and Cassiopeia. John had learned about them in school, but he had never seen them so clearly before without all the city lights. As he gazed up at the dazzling Milky Way, he felt so small in the vastness of the universe. John made a wish on the first shooting star he saw that night.On the last day of their camping trip, it was time to go fishing one final time. This time, John caught two whole buckets of fish all by himself! He was practically a pro angler after just a few days. After releasing them carefully back into the lake, the family had to pack everything back into their car. John was really sad to leave the beautiful outdoors behind.But as they drove back toward the city, he gazed out the window and silently vowed to himself: "Next summer, I'm going on an even bigger adventure!"篇6John's Awesome AdventuresHey guys! My name is John and I'm going to tell you all about the super fun adventures I had this summer. It was the best summer ever! I got to do so many cool things that I've never done before.First, I went horseback riding for the very first time. My uncle has a ranch out in the country, and he let me ride one of his horses named Buttercup. At first, I was a little bit scared because Buttercup is really big. But my uncle showed me how to get up on her back, and then he led her around the field while I was riding. It felt so weird being up that high! After a little while, I got used to it and started to relax. Riding a horse is like riding a very bumpy bike. Buttercup started trotting faster and I had to hold on tight. It was a blast! I can't wait to go horseback riding again.A few days later, we went camping out in the woods. We had to pack up our tent, sleeping bags, food, and other supplies into the truck. When we got there, my dad helped me set up the tent. Setting it up was kind of tricky, but we figured it out together. Once it was all set up, it felt like a little home in the middle of the forest.That night, we had a campfire and roasted hot dogs and marshmallows. The marshmallows got all gooey and delicious. My little sister couldn't stop giggling every time hers caught onfire a little bit. We told spooky stories around the campfire too. I tried not to act scared, but some of the stories gave me goosebumps! When it got late, we climbed into our sleeping bags inside the tent. It was so quiet outside except for the sounds of crickets and owls hooting. I've never experienced anything like that night of camping before.The next morning, we went fishing down at the lake. My dad helped me put a worm on the hook and cast my line out into the water. It took forever, but finally, I got a bite! I reeled it in as fast as I could. It was a big old bass! My dad had to help me get the fish off the hook. We caught two more fish that morning before heading back to the campsite. In the afternoon, we cooked up the bass we caught and it tasted amazing. Definitely the best fish I've ever had.On the last day of our trip, we went on a bike ride around some trails near our campsite. The trail went up and down a bunch of hills, which was tough but really fun. We saw a bunch of critters like squirrels, chipmunks, and even a deer! My legs were so tired after all the pedaling, but I didn't want the ride to end. We spotted a breathtaking waterfall and stopped for a snack break beside it. The fresh water misting my face felt incredible after such a workout.Finally, it was time to pack up and head home. I was exhausted but so happy after my adventurous week. As we drove away, I looked back and thought about how I can't wait to go camping, fishing, biking, and horseback riding again next summer. I made so many wonderful memories this year that I'll never forget!Well, that's the story of my awesome summer adventures! What's the coolest thing you've ever done over summer break? I'd love to hear about it. Maybe next year we could all go camping together – the more the merrier! Just don't forget to pack your biking gear, fishing rods, and a helmet for horseback riding. It'll be an epic time!。
北京语言大学智慧树知到“计算机科学与技术”《算法与数据分析》网课测试题答案（图片大小可自由调整）第1卷一.综合考核(共15题)1.蒙特卡罗算法是以下的哪种?()A.分支界限算法B.概率算法C.贪心算法D.回溯算法2.最长公共子序列算法利用的算法是()。
A.分支界限法B.动态规划法C.贪心法D.回溯法3.下列哪一种算法不是随机化算法?()A.蒙特卡罗算法B.拉斯维加斯算法C.动态规划算法D.舍伍德算法4.回溯法搜索状态空间树是按照什么的顺序?()A.中序遍历B.广度优先遍历C.深度优先遍历D.层次优先遍历5.使用回溯法进行状态空间树裁剪分支时一般有两个标准：约束条件和目标函数的界，N皇后问题和0/1背包问题正好是两种不同的类型，其中同时使用约束条件和目标函数的界进行裁剪的是0/1背包问题，只使用约束条件进行裁剪的是N皇后问题。
()A.错误B.正确6.哈弗曼编码的贪心算法所需的计算时间为()。
A.O(n2n)B.O(nlogn)C.O(2n)D.O(n)7.下面是贪心算法的基本要素的是()。
A.重叠子问题B.构造最优解C.贪心选择性质D.定义最优解8.使用分治法求解不需要满足的条件是()。
A.子问题必须是一样的B.子问题不能够重复C.子问题的解可以合并D.原3、问题和子问题使用相同的方法解9.回溯法解旅行售货员问题时的解空间树是()。
A.子集树B.排列树C.深度优先生成树D.广度优先生成树10.分支限界法主要有队列式(FIFO)分支限界法和优先队列式分支限界法。
()A.错误B.正确11.算法的复杂性没有时间复杂性和空间复杂性之分。
()A.错误B.正确12.解决0/1背包问题可以使用动态规划、回溯法和分支限界法，其中不需要排序的是动态规划，需要排序的是回溯法，分支限界法。
()A.错误B.正确13.舍伍德算法总能求得问题的一个解。
()A.错误B.正确14.程序是算法用某种程序设计语言的具体实现。
()A.错误B.正确15.计算一个算法时间复杂度通常可以计算循环次数、基本操作的频率或计算步。
北京市海淀区首都师范大学附属中学2023-2024学年高一下学期开学考试英语试题一、听力选择题1．Where are the speakers?A．In the lost-and-found.B．In a department store.C．In a factory.2．What does the man like about bars?A．The delicious drinks in bars.B．The location of the bars.C．The things to do in bars.3．What do we know about the woman?A．She has free lunch in her company.B．She’s a very hard-working employee.C．She got a low bonus.4．What does the man mean?A．The woman can do nothing to make Kate eat more.B．Kate will eat more if the woman stops worrying.C．Kate will eat normally after some time.听下面一段较长对话，回答以下小题。
5．What seems to be the woman’s problem?A．She didn’t feel well.B．She lost her wallet.C．Her car broke down.6．Where is the woman going now?A．To the hospital.B．To her home.C．To a taxi company.听下面一段较长对话，回答以下小题。
7．What’s the probable relationship between the speakers?A．Employer and employee.B．Husband and wife.C．Co-workers.8．What do we know about Debbie?A．She’s a friend of the speakers.B．She can baby-sit for the speakers tonight.C．She usually baby-sits during the weekends.听下面一段较长对话，回答以下小题。
天津大学智慧树知到“工商管理”《运筹学》网课测试题答案（图片大小可自由调整）第1卷一.综合考核(共10题)1.在求极小值的线性规划问题中，人工变量在目标函数中的系数为()。
A.0B.极大的正数C.绝对值极大的负数D.极大的负数2.()是指顾客到达系统后排队等候服务的方式和规则。
A.输入过程B.输出过程C.排队规则D.服务机构3.一个弧上有某种“流转物”流动的有向图称为()。
A.图B.树C.网络D.路4.用割平面法求解整数规划时，构造的割平面有可能切去一些不属于最优解的整数解。
()A.对B.错5.排队规则的类型不包括()。
A.损失制B.等待制C.混合制D.自主制6.古代著名的军事指挥家已能运用()。
A.定性决策方法B.定量决策方法C.依靠经验和知识的决策方法D.定性决策与简单定量决策相结合法7.若图G中没有平行边，则称图G为()。
A.简单图B.完备图C.基本图D.欧拉图8.求般获得最好经济效益问题是求如何合理安排决策变量(即如何安排生产)使目标函数最大的问题，求最大的目标函数问题，则记为max Z；若是如何安排生产使成本是最小的问题，则记为min Z。
()A.对B.错9.LP的数学模型不包括()。
A.目标要求B.非负条件C.约束条件D.基本方程10.目标函数取极小化的线性规划可以转化为目标函数取极大化后两者的最优解()。
A.maxZB.max(-Z)C.相关一个符号D.相同第1卷参考答案一.综合考核1.参考答案：B2.参考答案：C3.参考答案：C4.参考答案：B5.参考答案：D6.参考答案：D7.参考答案：A8.参考答案：A9.参考答案：D10.参考答案：D。
1.矩阵对策中，如果最优解要求一个局中人采取纯策略，则另一局中人也必须采取纯策略。
A.正确B.错误知识点: 阶段作业二学生答案: [B;]标准答案:B1.矩阵对策中，当局势达到平衡时，任何一方单方面改变自己的策略，都将意味着自己更少的赢得和更大的损失。
A.正确B.错误知识点: 阶段作业二学生答案: [A;]标准答案:A1.动态规划的基本方程是将一个多阶段决策问题转化为一系列具有递推关系的单阶段的决策问题。
A.正确B.错误知识点: 阶段作业二学生答案: [A;]标准答案:A1.一个动态规划问题若能用网络表达时,节点代表各阶段的状态值,各条弧代表了可行方案的选择。
A.正确B.错误知识点: 阶段作业二学生答案: [B;]标准答案:A1.在允许缺货发生短缺的存储模型中，订货批量的确定应使由于存储量的减少带来的节约能抵消缺货时造成的损失。
A.正确B.错误知识点: 阶段作业二学生答[B;] 标准答A;案: 案:1.二人有限零和对策中“有限”的含义是指 ( )。
A.甲方的策略有限，而乙方的策略无限B.乙方的策略有限，而甲方的策略无限C.甲、乙两方的策略都是有限的D.甲、乙两方的策略都是无限的知识点: 阶段作业二学生答案: [C;]标准答案:C1.下面关于网络图中的虚工序的描述，正确的是（）。
A.虚工序是技术上的等待，因而它不耗费人力、物力，只耗费时间B.虚工序与实工序一样，包括技术上的等待，因而它既耗费人力、物力，又耗费时间C.虚工序所描述的是一类实际上不存在的工序，只是为了作图的需要D.虚工序是表示前后两道工序之间的逻辑关系，因而它既不耗费人力、物力，又不耗费时间知识点: 阶段作业二学生答案: [B;]标准答案:D1.完全决定动态规划问题第k + 1阶段的状态x k+1的是（）。
A.阶段数kB.决策d kC.状态x kD.状态x k与决策d k知识点: 阶段作业二学生答案: [B;]标准答案:D;1.对动态规划问题的描述，下列错误的结论是（）。
