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当前学科：影像科
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在MR成像装置中，共设计梯度磁场的数量有（）
A . 1种
B . 2种
C . 3种
D . 4种
E . 5种
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Dreams Dreams do not happen when you're asleep. They happen when you're awake. Whatever your goals are, always remember you can make it true. Whether it be love, money, a childhood dream, and ultimately happiness, the most important idea is that you must never lose sight of your dream. Create reminders. Think about your original motivation often. Besides obvious factors that will come along when your dream is realized, think about other reasons. Who are you doing this dream for? Remind yourself often of your plan. Physical symbols always help—posting up pictures of the end result, buying items that symbolize your goals. Express your dream frequently. Whisper your dream through moonlight. Shout it on a busy highway. Write it on a balloon and set it free. Write it on paper boats and float them in the ocean. Write it as a message on a bottle and float that into the ocean. Explore and try different ways of different cultures of making ishes come true, small or big: paper cranes, and shooting stars. Tell your pet if you have one. Tell it to all the people you care about in your life. Create deadlines and punishments. For every step along the way, think of a realistic deadline. If too small, eventually you will be crashed with all the work you need and possibly never do it. If too large, you will probably forget about it. Punishments are necessary. They can be keeping yourself away from your favorite activities. Get a friend or family member to enforce this punishment. Keep your life. Do not forget about friends, family, work, and especially yourself! Keep contact with friends and family: over the internet, visit them, write to them. Try not start skipping work to work on your dream. Keep your brain, body, and soul in good shape at all times. Sleep often, read often, and enjoy life. Brainstorm ideas for your dream. Mind mapping (essentially creative concept mapping) is the ideal way to brainstorm. Any creative outlet will do just fine to find some creative ideas for your dream, especially writing or drawing. Any sort of art, even singing, playing music, photography, wood-carving can work. Buy a journal or two. Find inspiration. Dreams happen when we′re asleep.（） As long as you can see your drearn, you can make it come true.（） We can ask somebody to remind us of our dreams.（） We can tell our dreams to anyone we like to show off.（） Punishments like paying a fixed amount of money are helpful.（） A friend or family member can help to enforce the punishment.（） In order to make your dream come true, you have to forget about friends, family, work, and especially yourself.（） Keeping your dream alive means having no time to enjoy life.（） Mind mapping is the most ideal way to brainstorm.（） A journal can arouse your inspiration.（）
某大学图书馆进行装修改造，根据施工设计和使用功能的要求，采用大量的轻质隔墙。外墙采用建筑幕墙，承揽该装修改造工程的施工单位根据《建筑装饰装修工程质量验收规范》的规定，对工程细部构造施工质量的控制做了大量的工作。 该施工单位在轻质隔墙施工过程中提出以下技术要求： （1）板材隔墙施工过程中如遇到门洞，应从两侧向门洞处依次施工。 （2）石膏板安装牢固时，隔墙端部的石膏板与周围的墙、柱应留有10mm的槽口，槽口处加泛嵌缝膏，使面板与邻近表面接触紧密。 （3）当轻质隔墙下端用木踢脚覆盖时，饰面板应与地面留有5～10mm缝隙。 （4）石膏板的接缝缝隙应保证为8～10mm。 该施工单位在施工过程中特别注重现场文明施工和现场的环境保护措施，工程施工后，被评为优质工程。 逐条判断该施工单位在轻质隔墙施工过程中提出的技术要求的正确与否。若不正确，请改正。
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阅读《陋室铭》教学实录（节选），按要求答题。师：大家学完开头两句“山不在高，有仙则名。水不在深，有龙则灵”，紧接下来的一句是。斯是陋室，惟吾德馨”，如果将这句改成与上句句式一致的句子不是更好吗？大家改改看。（学生试着改写）生1：房不在好，有我则行。生2：室不在陋，有德则馨。师：室不在“陋”吗？对，说反了，应是室不在--“华”，我们可以改成：室不在华，有德则馨。行吗？（学生的意见不一致）那么，我们再来看这样一句“苔痕上阶绿，草色入帘青”。它的后面几句是“谈笑有鸿儒，往来无白丁。无丝竹之乱耳，无案牍之劳形”。如果按两两相对的结构，可以改为“有苔痕上阶绿，有草色入帘青：无……，无……”。同学们试着再加一加，（学生试改：无房子之华丽，无闲人来打扰；无奇花异草，无群蜂群蝶……师逐一点评）师：老师也试着加一句：无名花攀影，无贵木帮衬。现在我来整体读一下--“山不在高，有仙则名；水不在深，有龙则灵。室不在华，有德则馨。有苔痕上阶绿，有草色入帘青。无名花攀影，无贵木帮衬。”大家觉得怎么样？生：缺少美的语感。师：噢，他感觉出来了，结构太一致了，没有变化，一个调子，让人生厌。文章要整散结合，长短结合，读了才会抑扬顿挫、摇曳生姿。对以上实录的分析，不正确的是（）。
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