【单选题】
If you grow too fast your entire economy could completely shut down and bring growth to a(n) ___.
A. halt
B. cease
C. peak
D. epidemic
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答案
A
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为新建设计开行250km/h(含预留)及以上动车组列车。
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高速铁路为新建设计开行 (含预留)及以上动车组列车。
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运营试验最高时速486.1 公里/小时。
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中国运营试验最高时速_______公里/小时。
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运营总里程排名世界第一
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【单选题】
高速铁路是初期运营速度不小于200km/h的 。
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CRH1型动车组引进的是_______的技术。
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【单选题】
_______型动车组引进的是加拿大庞巴迪公司的技术。
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