更多“弱性树脂有什么特性？”相关的问题
晶体管共发射极输出特性常用一族曲线表示,其中每一条曲线对应一个特定( )。
A. I C B. I B C. U CE
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C语言中一个函数由函数首部和__________两部分组成。
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关于肝细胞棘球蚴病，正确的是（）
A.X线片具有重要价值
B.容易引起肝硬化
C.多位于肝左叶
D.不易出现黄疸
E.多位于肝右叶
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当咳嗽症状比例超过群体（）时，考虑全群饮水/饲料加药？
A.2%
B.5%
C.10%
D.15%
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When an invention is made, the inventor has three possible【1】of action open to him: he can give the invention to the world by publishing it, keep the idea【2】, or patent it. A【3】patent is the result of a bargain【4】between an inventor and the state, hut the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period【5】. Only in the most exceptional circumstances【6】the lifespan of a patent【7】to alter this normal process of events. The longest extension ever【8】was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent's normal life there was no color TV to【9】and thus no hope for reward for the invention. Because a patent remains permanently【10】after it has terminated, the shelves of the library attached to the【11】office contain details of literally millions of ideas that are free for anyone to use and, if【12】than half a century, sometimes even repatent. Indeed, patent experts often advise anyone【13】to avoid the high cost of conducting a search through【14】patents that the one sure way of violation of any other inventor's right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form【15】invalidates further patents on that idea, it is traditionally【16】to take ideas from other areas of print. Much modern technological advance is【17】on these presumptions of legal security. Anyone closely【8】in patents and inventions soon learns that most 'new' ideas are, in fact, as old as the hills. It is theft reduction to commercial practice, either through necessity or dedication, or through the availability of new technology,【19】makes news and money. The basic patent for the theory for magnetic recording dates back to 1886. Many of the original ideas behind television originate【20】the late 19th and early 20th century. Even the Volkswagen rear engine ear was anticipated by a 1904 patent for a cart with the horse at the rear.(1)A．workB．possibilityC．measuresD．courses
A.B.C.D.E.F.(1)A．workB．possibilityC．measures
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下列关于心房颤动的诊断，不正确的是（）
A.窦性P波消失，代之以大小不等、形态各异的颤动波（f波），f波的频率350～600次／分
B.第一心音强弱不等，心律绝对不齐
C.心率大于脉率
D.容易听到第四心音
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网点的营销触点包括哪些地方（）
A.门口
B.客户休息区
C.自助服务区
D.现金区及非现金区
E.以上都是
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下列选项属于区域火灾风险评估一级指标的是（）
A.消防管理
B.区域基础信息
C.消防宣传教育
D.灭火救援能力
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维生素E中特殊杂质生育酚的检查方法应为（）
A.TLC高低浓度对比法
B.HPLC不加校正因子的主成分自身对照法
C.双相滴定法
D.铈量法
E.亚硝酸钠滴定法
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销售A产品一批给长江公司，不含增值税的售价为150000元，增值税为25500元，合计175500元，扣除预收款100000元，其余款项长江公司尚未支付。
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成本领先战略和差异化战略在企业的资源和能力受到约束的条件下所采取的一种折中战略是（ ）
A . 总成本领先竞争战略B . 目标集中竞争战略C . 差别化竞争战略D . 产品竞争战略
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加入世贸组织，对于中国广大企业来说，面临一个新的发展机遇。这里所说的“机遇”主要是指中国的企业（）
A.将更多地履行多边贸易体制的义务
B.可以走出国门，永远立于不败之地
C.有了更广泛地参与国际分工的机会
D.获得了与国际公司直接竞争的机会
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