单选题
发布日期:2020-08-20
妊娠囊
胎芽
胎心搏动
胎儿心脏结构
卵黄囊
超声波是一种波长极短的机械波,在空气中波长一般短于2cm(厘米)。它必须依靠介质进行传播,无法存在于真空(如太空)中。它在水中传播距离比空气中远,但因其波长短,在空气中则极易损耗,容易散射,不如可听声和次声波传得远,不过波长短更易于获得各向异性的声能,可用于清洗、碎石、杀菌消毒等。在医学、工业上有很多的应用。
观察,是有目的、有计划的知觉活动,是知觉的一种高级形式。观,指看、听等感知行为,察即分析思考,即观察不止是视觉过程,是以视觉为主,融其他感觉为一体的综合感知,而且观察包含着积极的思维活动,因此称之为知觉的高级形式。是指细察事物的现象、动向;考查或调查;清朝官员的名称。采访时“观察”意思是:指记者对客观事物所进行的一种查看体验活动,简单讲就是用眼睛采访。另有杂志《观察》,是民国最为成功的大型知识分子杂志之一,它的成功主要在于它的经营和它所持的立场。
“内容”是一个互联网术语,指的是网页上的文字和图片。
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( )是指用户在购买和使用通信服务之前对公司所进行的品牌、业务、公益形象等方面宣传的总体印象。
MINI-LECTURE 3 MINI-LECTURE 3 How to be an Expert I.Background information about the speaker A.Being an expert in anthropology himself B.Starting considering the question when attending a (n) (1) ______ (1)______ thinkingabout how to become the person to be needed and how tobecome experts in one’s field II. What’s an expert: five (2) ______of being real experts (2)______ A.Immense working knowledge of a specific field —(3) ______ (3)______ —knowingwhere to find information not memorized B.Significant experience working with that knowledge —applyingit in creative ways —solvingproblems with (4) ______solutions to refer (4)______ —identifyingproblems not noticed C.(5) ______ (5)______ —makingone a slave to the problem without such ability —havingno time to develop your expertise without such ability D.(6) ______ (6)______ —embeddedin a web of other experts —embeddedin a wider social web E.Curiosity —curiousabout their fields —ableto recognize their understanding limitations, etc. III. How to become an expert A.Through schooling, (7) ______, etc. (7)______ B.No “quick and easy” way C.Things for you to focus on —perpetuallearning a) beingaware of one’s (8) ______of current knowledge (8)______ b) lifelonglearning process —networking a) strongconnections with people in the same field b) earningto promote oneself —practice:(9) ______one’s expertise through daily practice (9)______ —presentationskills a) webdesign and power point b) writing,drawing, public speaking, the way you dress —(10) ______widely, so that (10)______ a) peopleunderstand why they need an expert b) you won’t be the only person to solve a problem
不同轨距联轨站换装货物的装车,按()。
简述医疗安全(不良)事件的概念。
学校为学生接受、掌握、消化知识提供了良好的客观条件,( )是学生最终实现对知识深刻内化的重要环境。
磁异常
Tan6测量一般多用于35KV及以上的电力变压器,互感器,多油断路器和变压器油的绝缘试验。
库区的安全管理分为哪几部分。
我国现阶段强制推行建设工程监理制度的手段包括()。
主要作用基础为抑制HMG-CoA还原酶活性的药物是()
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