How does the author feel about his work?

How does the author feel about his work? A.It is boring. B.He is happy with his

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What are they talking about?

What are they talking about? A.Booking a room. B.Staying for another few days he

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{MP3:http://wximg.233.com/attached/media/20160711/2016071114

{MP3:http://wximg.233.com/attached/media/20160711/20160711145018_4235.mp3}第一节听下

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一、情景描述 某大型石油化工生产企业,厂区内外分布各级各类油罐数个。厂区外为原油储罐区,厂区内则是成品油和液化石油气储罐

一、情景描述 某大型石油化工生产企业,厂区内外分布各级各类油罐数个。厂区外为原油储罐区,厂区内则是成品油和液化石油气储罐区,油品通过输油管道和铁路及公路运输,

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铁路高墩采用滑模施工时,当底层混凝土强度至少达到( )MPa时,可继续提升。

铁路高墩采用滑模施工时,当底层混凝土强度至少达到( )MPa时,可继续提升。A.0.1 B.0.2 C.1 D.2

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