更多“简述兽皮披服装的形成原因？”相关的问题
关于亚急性感染性心内膜炎的临床表现，下列描述不正确的是
A．几乎所有的患者均发热B．大多数患者可有杵状指C．80%～85%的患者可闻心脏杂音D．随着抗菌药的广泛应用，周围的血管征己不多见
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热力学基础是研究（）的规律和方法的一门学科。
A . A、热能与机械能相互转换
B . B、机械能转变成电能
C . C、化学能转变成热能
D . D、化学能转变成电能
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Phytochrome（植物的光敏色素 )mediates the __________ control of flowering in rice, a short-day plant.
A.hydrous
B.respiratory
C.photoperiodic
D.photosynthetic
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机动车在规定的机坪道路上的正常行驶时速不得超过（）公里，接近飞机的时速不得超过（）公里，冰雪路面限速（）公里。（）
A.25，5，15
B.20，5，10
C.30，5，15
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“项目管理器”中的“数据”选项卡用于显示和管理（）。
A.本地视图、远程视图、连接、存储过程 B.数据库、自由表、查询 C.数据库、自由表、视图 D.数据库、自由表、查询、视图
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The newly built sports ground has a ______ of 60,000 people.
A．capabilityB．capacityC．advantageD．seat
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执行下列语句后，输出结果为 cout.put('s'); cout＜＜'c'＜＜'a';
A．caB．seaC．sD．a
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频率为50Hz的交流电，其角频率为157rad／s。（）
A . 正确
B . 错误
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车轮检测设备的工作频率为（）。
A.3.60KHZ B.6.52KHZ C.43KHZ D.20KHZ
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Home HeatingCentral heating became popular only afterthe Civil War. Typically, coal-burning furnaces （火炉）fueled the early systems. Natural gas had developed into the leading fuel by 1960.Its acceptance resulted in part from its wide uses.Because it comes primarily fromU.S. and Canadian fields, natural gas is also less vulnerable （脆弱的） than oil is to war. Oil remains the most important fuel in a few areas,such as New Englard.Electric heating dominates most areas withmild winters and cheap electricity,including the South and the Northwest. It wasmade popular at least in the South by the low cost of adding electric heating tonew houses built with air-cbnditioning.Bottled gas,which is somewhat more expensivethan utility gas, is the fuel of choice in rural areas notserved by utility pipelines.Wood is the leading heating fuel in just a few rural counties.Home heating, whichaccounts for less than 7 percent of all energy consumed in the U.S., has had a commendable（值得赞扬的） efficiency record: from 1978 to 1997, theamount of fuel consumed for this purpose declined 44 percent despite a 33 percentincrease in the number of housing units and an increase in house size. The U. S.Departmentof Energy, however, forecasts that energy used in home heating will rise by 14 percentover the next two decades. That rise is small considering an expected 21percentincrease in the number of houses and the trend toward larger houses.Natural gas end electricity will probablydominate the home heating market for the next two decades. Solar （太阳的） heating never became popular because of cost and limited winter sunlightin most areas; in 2000 only 47, 000 homes relied on it.第 36 题 Natural gas didn't become the leading fueluntil.
A．1978.B．1960.C．1997.D．2000.
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非周期信号包括()和瞬变非周期信号两种.
A.随机信号
B.准周期信号
C.数字信号
D.连续信号
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遵循知情同意原则，对于知情不同意的是否需要签字（）
A.需要
B.不需要
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海南省西沙群岛的主要观光景点有（ ）。
A.乐会古城 B.兄弟公庙 C.石崖涌浪 D.永兴岛热带海洋博物馆 E.将军林
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钢纤维混凝土路面厚度可以减薄( )，而缩缝间距可以增至()m。
A10%~30%;5~15
B10%~30%;15~30
C30%~50%;5~15
D30%~50%;15~30
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清律规定：凡严重危害封建统治的犯罪，应立即处决的，叫“斩立决”或“绞立决”，如危害性较小或有可疑者，暂判“斩监候”，或“绞监候”，缓刑处决，延至秋天由九卿重审。
A.对 B.错
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