更多“两个构件之间为面接触形成的运动副称为高副。”相关的问题
患者,女,46岁,售货员,右下肢静脉扩张8年,长时间站立后小腿酸胀,有指凹性水肿,近期常有小腿皮肤痰痒,色素沉着,检查Trendelenborg试验阳性、Perthes试验阴性。初步诊断是()
A.原发性下肢深静脉瓣膜功能不全
B.周围型下肢深静脉血栓形成
C.原发性下肢静脉曲张
D.下肢栓塞性浅静脉炎
E.血管闭塞性脉管炎
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在使用吊笼顶部控制盒时,其他操作装置()。
A.可同时使用
B.均不起作用
C.联动作用
D.没要求
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建设工程项目质量控制系统是()
A.建设单位的质量管理体系或质量保证体系 B.工程承包企业的质量管理体系或质量保证体系 C.监理机构的质量管理体系或质量保证体系 D.一个一次性的质量控制工作体系,不同于企业的质量管理体系
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There (1)_____ not one type of reading but several according to your reasons for reading. To read carefully, you have to (2)_____ your reading speed and technique (3)_____ your aim (4)_____ reading. Skimming is a technique necessary for quick and efficient reading. When skimming, you (5)_____ the reading (6)_____ quickly in order to get the (7)_____ of it, to know how it is organized, (8)_____ an idea of the tone or the intention of the writer. Skimming is (9)_____ an activity which (10)_____ an overall view of the text and (11)_____ a definite reading competence. Skimming doesn"t need reading all the material, but it doesn"t mean that it is an (12)_____ skill for the lazy, because it need a high degree of alertness and concentration. When you read, you usually start with (13)_____ understanding and move towards detailed understanding rather than working the other way round. But (14)_____ is also used after you have already carefully studied and you need to (15)_____ the major ideas and concepts. In order to be able to skim quickly and (16)_____ through a text, you should know where to look for what you want. In preview skimming you read the introductory information, the headings and subheadings, and the summary, if one is provided. (17)_____ this skimming, decide whether to read the material more thoroughly, and select the appropriate speed (18)_____ you read. The same procedure (19)_____ for preview skimming could also be used to get an overview. Another method would be to read only key words. This is done by omitting the unnecessary words, phrases, and sentences. In order to skim efficiently and fulfill your purpose, (20)_____ practice is necessary.
A.adaptB.adoptC.changeD.adept
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测量变压器绕组的直流电阻可以发现()问题。
A . A、绕组有无断线
B . B、层间短路
C . C、接头焊接是否牢固
D . D、分接开关的接触是否良好
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制冷剂R717的优点是()
A.气化潜热较大
B.排气温度低
C.工作压力低
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巴比妥类的药理作用有 .
A. 麻醉 B. 镇吐 C. 抗惊厥作用 D. 镇静、催眠 E. 中枢性肌肉松
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确定盈亏平衡点的产量,就是了解企业生产销售产品数量的最低限度。
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清初以黄宗羲、顾炎武、王夫之为代表的启蒙思想家的散文被称为()
A.桐城派散文
B.阳湖派散文
C.文人之文
D.学人之文
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以下文物中属于我国二级文物的是()。
A.中国古旧图书中具有特别重要价值的代表性善本
B.中国古旧图书中具有重要价值的善本
C.中国古旧图书中具有比较重要价值的善本
D.具有比较重要价值的民族、民俗文物
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生产任务与完成情况的图表化是目视管理的唯一方法。()
A . 正确
B . 错误
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{{*HTML*}}德育包括政治教育、______和道德品质教育三个方面。
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根据《保安服务管理条例》规定,()不属于保安员享有的权利。
A.查验出入证件
B.登记出入车辆
C.开展巡逻守护
D.享受劳动条件
E.享受劳动保护
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胜败反应的形态意义哪一项描述是错误的?()
A.胜利者会喜悦、炫耀和放松,神经系统处于兴奋状态,身体表现抵抗重力的向上反应 B.失败者神经系统进入压抑状态,全身能量丧失,身体重心向下并收缩,表现出垂头丧气,悲伤、气馁 C.观察经历战斗之后当事人的胜败反应,即可分析其内在心态的兴奋或悲伤 D.人在感觉胜败时内心的兴奋或悲伤可以完全不从身体动作上表现出来
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机柜大部分都会放置在设备间,分为()。
A、服务器机柜
B、网络机柜
C、控制台机柜
D、路由器机柜
此题为多项选择题。
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