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【简答题】
侧面磨耗主要发生在( )曲线的外股钢轨上,是目前曲线钢轨损伤的主要类型之一。列车在曲线上运行时,轮轨的摩擦与( )是造成外轨侧磨的根本原因
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【简答题】火灾发生时,通过相关探测器感应自动释放或者人工操作释放()气体灭火。它无毒,无味,无色,依靠把防护区的氧气浓度降低到()%以下,对燃烧产生窒息作用来达到灭火的目的。属于(),灭火能力强。
【单选题】While walking the guest to the elevator, you ask the guest what they're looking forward to doing today. They complain about that they're not happy about today's special activities. How do you respond?
A.
Sympathize with the guest adimtting that you don't really like anything that's offered either.
B.
Act suprprised that they aren't excited about any of the options and tell them everything you know about each one, trying to convince them to get excited about something.
C.
Make a comment about how at least they have options but you have to work all day.
D.
Express your understanding mention how wonderful the weather is today and suggest some outdoor activites to enjoy it.
【简答题】慢性非传染性疾病的预防与控制策略及措施包括______、______、______、______。
【多选题】Which of the following can be used to ask the guest when he wants the table?
A.
May I have your arrival time?
B.
At what time can we expect you?
C.
What time would you like your table?
D.
For how many people, please?
【简答题】英格兰银行成立于 ,美联储成立于 。
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