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热风炉分为三种基本结构形式，分别为（）、（）、（）。
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参与或直接导致细胞发生恶性转化的基因是（）。
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A few years ago , a sad thing happened. A young American woman left her 21_______for career reasons; she moved far away. For this reason ,a 36-year- old 22_______father has custody of his two children , eleven and eight years old. He works long hours as a 23_______, including weekends. On his days off from work , he goes to a local 24_______college. He' s studying to 25 his job skills so he can make more money for his family. At night he does his homework at the same table as the 26_______. But who takes care of the kids in the evenings when their father is working or 27_______to school? His "extended family"- his mother , other 28_______, and his new girlfriend 29_______out as much as they can. He thinks his girlfriend , who is from Mexico , his home country , is good for his family. He doesn’t want to date "Anglos"or"Anglicized" women because he thinks they value their 30_______over motherhood. He wants a wife with traditional , religious values like his mother.
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寻址方式是指令如何给出操作数或操作数地址。()
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1999年12月，全国人大常委会颁布了《中华人民共和国城市规划法》，这是新中国第一部城市规划基本法律，它标志着我国城市规划进入了有法可依的发展新阶段。()
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为什么IBM、P&G、可口可乐公司、百事可乐公司、微软公司等都没有设立自己的广告公司，而把广告业务交给企业之外的广告公司来做？
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传染病种类由什么部门决定和管理？
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合金元素
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BTS3002C与BTS3001C相比，下面描述不正确的有。（）