更多“磨床液压系统的工作压力一般在（）以下。”相关的问题
核电站利用核能进行发电，所使用的核燃料是（）。
A．镭
B．铀
C．氢
D．铬
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下列哪一个调类不属于普通话的调类（）
A.阴平
B.阳平
C.上声
D.入声
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关于猪囊尾蚴正确的是
A．是吞食猪肉绦虫的囊尾蚴所致
B．多数保守治疗可愈
C．玻璃体多数可保持透明
D．有时可见虫体蠕动
E．眼底检查时见囊尾蚴约1PD大小
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在MSR路由器上，使用（）命令查看设备当前运行版本。
A.displayrunning
B.displaysoftware
C.displayversion
D.displaycurrent-version
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用人单位应当依照（）要求，严格遵守国家职业卫生标准，落实职业病预防措施，从源头上控制和消除职业病危害。
A.安全生产
B.卫生标准
C.法律法规
D.政策文件
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“金”元素能量油的功效是：（）。
A.消炎杀菌B.润肺通气C.消除下腹胀气D.改善便秘
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热电偶测温系统中,热电偶通过补偿导线及铜导线连接到动圈仪表上。此时动圈仪表所要求的仪表外接电阻应包括()。
A. 热电偶、补偿导线、铜导线三者电阻之和 B. 补偿导线、铜导线二者电阻之和 C. 热电偶、补偿导线二者电阻之和 D. 只需考虑铜导线电阻
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信用社每年应对信贷业务档案进行一次全面检查。
A.对 B.错
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为观察某草药对致癌物毒性拮抗作用，将60只大鼠随机分三组，每组20只进行毒性实验，对照组发生肿瘤为0只，致癌物组发生肿瘤为15只，草药+致癌物组发生肿瘤为8只。要比较三组大鼠肿瘤的发生率，问应选用何种统计方法（）。
A.McNemar检验
B.校正四格表卡方检验
C.行×列表卡方检验
D.必须进行合理合并后，再进行卡方检验
E.只能用fisher的精确概率法
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在能见度不良的情况下，一船仅凭雷达测到他船，并断定存在碰撞危险，如采取转向措施，下列做法正确的是：（）
A.对正横前的所有船舶均向右转向
B.除对被追越船外，对正横前的船舶尽可能背着他船转向
C.对追越船，背着他船转向
D.对追越船避免背着他船转向
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关于开放式问卷调查编制方法，表述正确的是()。
A.无标准答案 B.是非法 C.选择法 D.排列法 E.回答自由
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下列有关变构调节的描述哪些是正确的（）
A.变构酶可分为催化部位和调节部位
B.变构酶通过非共价键与变构剂结合
C.变构后变构酶的活性增加
D.变构酶在变构过程中有协同效应
E.变构调节可改变代谢过程的速度和方向
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[背景材料] 2009年5月13日，某县某燃料公司蜂窝煤生产车间内，工作人员张某和王某正在操作搅拌机，搅拌机齿轮没有安装防护罩。上午11点左右，王某临时有事离开了生产车间，由张某独自一人操作搅拌机。...机器安全防护装置中，控制安全装置的作用是( )。
A．防止操作人员接触机器危险部件
B．把暴露在危险中的人体从危险区域中移开
C．阻止身体的任何部分靠近危险区域
D．在操作到危险点之前，自动使机器停止或反向运动
E．使机器能迅速地停止运动
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网络文化为当代青少年塑造人格、拓宽视野、提高素质创造了有利条件，注入了新的活力。青少年在享受网络文化时，不正确的态度是（）
A.自觉遵守网络道德和法律B.增强自我保护意识，自觉抵制不良诱惑C.充分利用网络优势，做网络的主人D.网络交往具有虚拟性、间接性和隐蔽性，所以要拒绝网络
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Dear Alumni, Parents and Friends, Noted British politician Sir Winston Churchill once said, 'Every day you may make progress. Every step may be fruitful. Yet there will stretch out before you an ever-lengthening, ever-ascending, ever-improving path. You know you will never get to the end of the journey. But this, so far from discouraging, only adds to the joy and glory of the climb.' What a wonderful expression of the mission before us at K.C. Innovation University! Our path into the future is alive with possibilities. It is ripe with promise, and it is motivated by and challenged with the dreams of young people yet to enter our hallowed halls. We have a mission to help turn those dreams into reality, and we are committed to unparalleled success. Dr. Martinson and his wife Libby, devoted 20 years of their lives to the mission of this university, and I stand in the results of their efforts. What he has done has made my job so much easier, I am now benefiting from his work even though he has left his position. I join with the wonderful staff and faculty of K. C. Innovation University in appreciation for their dedication and vision, and pledge to move that vision forward in exciting and powerful ways. As the summer progresses, we are getting ready for one of the most exciting times in the history of K.C. Innovation University. Earth movers and heavy construction equipment have already begun to break ground for several new buildings and facilities. We will record and report this progress over the next several issues of this publication, and encourage you to return to campus to watch first-hand as the face of your alma mater evolves. In the pages of this magazine, you'll read that our most recent fundraising efforts raised ＄ 20 million dollars. Don't let the number mislead you; we need double that amount--NOW--if we are to brand K. C. Innovation University and promote it as one of America's finest. Our vision is huge, but our focus and dedication are huge. We embrace the vision, and with God's grace and your help, we will succeed. We covet your prayers and your support as together we watch the vision become reality.What is the author trying to prove with the quotation of Winston Churchill?A．It is impossible for us to reach those goals that are not realistic.B．The difficulties ahead will discourage those without a strong will power.C．We should strive for what we set as our goals and success no matter what happens.D．The road to success is filled with difficulties and even uncertainties.
A.'B.C.C.D.E.C.F.G.WhatH.ItI.B．TheJ.C．WeK.D．The
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