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Temperatures plunged ( 骤降 ) to record lows in Germany and heavy snow forced normally sunny Marseille to close its international airport as freezing winter weather gripped much of Europe on Wednesday. Port authorities ( 官方,当局 ) in the Dutch city of Rotterdam deployed ( 调度 ) an icebreaking ship for the first time in 12 years, while in Britain forecasters issued a new severe weather warning. In the Balkans, thousands shivered in their homes after gas supplies to southeastern Europe were cut as a result of a contract dispute between Russia and Ukraine, reminding many of the freezing winters they endured in the wars of the 1990s. “It all reminds me of the war when we were freezing, except there is no shooting,” said Hilmo Celjo, who stood in a queue near the Bosnian capital Sarajevo to buy wood and coal. Temperatures sank to record lows in parts of Germany overnight. A weather station in the eastern state of Saxony said the coldest spot was -27.7 degrees Celsius. Thick snow covered much of the country and icebreakers were at work on several waterways, including the River Elbe in eastern Germany. “I'm wearing all my warmest clothes; I've got two pairs of socks on. Otherwise drinking hot cocoa helps. We’ve just been sitting in McDonald’s,” Cologne resident Florian Densing told Reuters Television. A 77-year-old woman was found dead outside in the eastern city of Weimar on Monday. She appeared to have frozen to death after she had gone missing from her old people’s home. In France, temperatures dropped as low as -16 degrees Celsius on Wednesday in the north of country, while 40 cm of snow fell in the Marseille region in just a few hours. Authorities blocked access to nearby motorways ( 高速公路 ) and 1,000 motorists were stuck in their cars awaiting rescue services. Marseille’s main Saint Charles train station was paralyzed ( 瘫痪 ) as signaling froze. School buses were canceled in the entire Bouches du Rhone area, where Marseille is located. France’s Secretary of State for Transport, Dominique Bussereau, demanded an investigation into “unacceptable” chaos at Charles de Gaulle, where hundreds of flights were canceled and thousands of passengers were stranded ( 进退两难 ) earlier in the week. In Albania, remote areas were blocked by heavy snow and isolated villages were being supplied with food by helicopters. A religious ceremony in which believers plunge into an icy river to retrieve( 取回 ) a holy cross was canceled because of the cold. A hunter killed two wolves which had ventured ( 冒险 ) near the northern Albanian town of Kukes.
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举一反三
【简答题】科学的企业层面的创新生态系统应当包括哪些要素?
【单选题】下列关于一级反应的描述,不正确的是
A.
只有基元反应的级数才可能是一级反应
B.
浓度的对数和时间作图呈线性关系
C.
一级反应的半衰期与初始浓度无关
D.
速率系数的单位为 时间-1
【简答题】推动企业创新的主要外部因素包括哪些?
【单选题】酶活性的最大温度是
A.
最适pH
B.
酶浓度
C.
最适温度
D.
反应时间
【单选题】创业型经济对创新型人才的素质提出的要求包括哪些:①丰富的创新知识;②敏锐的创新观察;③超前的创新思维;④坚韧的创新意志;⑤科学的创新实践。
A.
②③④
B.
②③⑤
C.
①③④⑤
D.
①②③④⑤
【简答题】创新人才的基本素质要求包括哪些方面?
【单选题】下列关于温度对酶活性影响的说法,哪项是正确的:()
A.
体内所有酶的最适温度均为37℃
B.
酶活性最大的时温度为酶的最适温度
C.
酶的最适温度为酶的特征性常数
D.
低温和高温一样都能破坏酶结构
【多选题】“科学思维”主要包括哪些要素( )。
A.
模型建构;
B.
科学推理;
C.
科学论证;
D.
质疑创新;
【单选题】在高温淀粉酶运用到工业生产时,需对该酶的最佳温度范围进行测定。图中的曲线①表示在一定温度范围内的相对酶活性(酶活性与酶最大活性的百分比)。将酶在不同温度下保温足够长的时间,再在酶活性最高的温度下测其残余酶活性,由此得到的数据为酶的热稳定性数据,即图中的曲线②。根据图中的数据,判断该酶使用的最佳温度范围是()。
A.
40~50℃
B.
50~60℃
C.
60~70℃
D.
70~80℃
【多选题】创新的要素包括以下哪些?
A.
新颖
B.
新奇
C.
有价值
D.
有可行性
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