开心竞技场

1如果一只篮球的重量是350克加上它本身重量的一半,那么它的重量是多少? A 184克B 525克 C 70()克D 1000克2“1 was put to bedwhenever 1 did somethingwrong when 1 wasachilcl.”这句话中,“puttobed”是表示英美父母对孩子的: A宽容B惩罚3巾灯淘旱梨形的理由是 第1题有圈套     

开心竞技场

纤纤:嗨!开心竞技场又和同学们见面了,来来来,想开心就一起来做题吧!聪明的你、可爱的你一定会通吃所有小兵小虾,最后会收到我们送给你的精美礼品哦!好了,心动不如行动,赶快开始吧!(2004年第6期)课内八才1.“周瑜打黄盖”的故事流传千古,其中周瑜是吴国人,那么黄盖是哪一国人呢?()A.魏国B.吴国C.蜀国2.请找出与“确信”意义相同或最相近的词:()。A.正确B.明确C.信心D.肯定E.真实3.火车守车(车尾)长6.4米;机车的长度等于守车的长加上半节车厢的长。车厢长度等于守车长加上机车长。火车的机车、车厢、守车共长多少米?()A.25.6米B.36米C.5…     

智能的开发

委内瑞拉共和国已开始实施一项宏伟的规划,要在今后的十年里提高整个国家的智力水平。委内瑞拉将人脑资源的开发作为国家的首要目标。目前他们在全国推广的思维技能教程,就是为了使国民们博学多识、富于创造、具有解决问题的能力。 正如专家所希望的,委内瑞拉的智力开发是从孩子出生前的怀孕期护理开始的。在医院、诊所和门诊室,孕妇们可以看到有关营养和健康的电影和电视录     

农业中的放射性同位素

原子核的秘密的揭露,使人类掌握了新的無穷尽的能源。第一座原子能电站在苏联的建立,为將这个能源实际利用于工業和农業的和平目的,奠定了基础。原子技术的發展,开辟了把放射性同位素应用到各种全然不同的科学技术部門中去的广闊的可能性。人工取得放射性同位素的方法之一,是在原子核反应堆中用中子来照射。比如,用中子照射普通的天然的磷的时候,部分的磷原子核就和中子結合而变成磷的放射性同位素(磷-32)的原子核。当放射性磷的核衰变的时候,核中的一个中子轉化成質子,同时放射出一个β粒子(帶陰电的电子)。衰变是按照这个方式發生     

催化作用

对于化学家来讲,控制化学过程的速度是十分重要的。常常由于无法使化学反应以适当的速度进行,以致于很多重要的化学变化不能够在工业上应用。例如,化学家长时间进行氮和氢合成氨的研究。在常温下达两种气体间的反应慢得不能觉察;而在高温下,反应固然决了,但是氨分子很容易分解,因此得到的氨是微乎其微的。     

The visual theology of Victorian popularizers of science. From reverent eye to chemical retina

This essay examines the use of visual images during the latter half of the nineteenth century in the work of three important popularizers of science. J. G. Wood, Richard Proctor, and Agnes Clerke skillfully used illustrations and photographs to establish their credibility as trustworthy guides to scientific, moral, and religious truths. All three worked within the natural theology tradition, despite the powerful critique of William Paley's argument from design set forth in Charles Darwin's Origin of Species (1859). Wood, Proctor, and Clerke recognized that in order to reach a popular audience with their message of divine wonder in nature, they would have to take advantage of the developing mass visual culture embodied in the new pictorial magazines, spectacles, and entertaining toys based on scientific gadgets emblematic of the reorganization of vision. But in drawing on different facets of the emerging visual culture and in looking to the images produced by the new visual technologies to find the hand of God in nature, these popularizers subtly transformed the natural theology tradition.     

Community outreach library services in the UK: a case study of Wirral Hospital NHS Trust (WHNT)

AIMS AND OBJECTIVES: The study evaluates the Community Outreach Library Service at Wirral Hospital National Health Service Trust (WHNT). It considers the information seeking behaviour and information needs of primary care staff, and service effectiveness in meeting those needs. METHODS: A literature review established the current context and areas of best practice. The investigative case study used postal questionnaires to 250 primary care staff and an interview with the Community Outreach Librarian. FINDINGS: Themes emerged from the literature regarding information seeking behaviour, information needs, and meeting user needs through effective service delivery. Outreach services have value in terms of improving information skills and providing services at point of need. Time is a major constraint for both users and service providers. CONCLUSIONS: Investment is needed from appropriate funding sources to support the provision and marketing of outreach library services. Librarians benefit from sharing best practice. The continued evaluation of outreach library services is recommended.     

User library service expectations in health science vs. other settings: a LibQUAL+ Study

Objectives: To explore how the library service expectations and perceptions of users might differ across health‐related libraries as against major research libraries not operating in a medical context; to determine whether users of medical libraries demand better library service quality, because the inability of users to access needed literature promptly may lead to a patient who cannot be properly diagnosed, or a diagnosis that cannot be properly treated. Methodology: We compared LibQUAL+® total and subscale scores across three groups of US, Canadian and British libraries for this purpose. Results: Anticipated differences in expectations for health as other library settings did not emerge. Conclusions: The expectations and perceptions are similar across different types of health science library settings, hospital and academic, and across other general research libraries.     

信息通信技术用户的类型

1调查结果概要 ·8％的美国人是参与性网络及移动设备的深度使用者。 ·另外23％的美国人是务实技术的接受者——他们使用高科技工具紧跟社会网络并有效率的工作。