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下列各类水体中，对河流的径流量有明显调蓄作用的是（）
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机房宜采用（）方式，通信线缆应与电源电缆分开布放。
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下列哪些传染病，外周血白细胞总数常常是升高的？（）
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关于结算业务印章管理，下列说法正确的是（）。
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母丁香
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某单位会计员小赵、小钱、小孙、小李在一起讨论账户借贷双方登记的内容，其正确的是( )。 A．小赵说：借方反映资产减少，负债、所有者权益增加，费用减少，收入增加；贷方所反映的内容与借方正好相反 B．小钱说：借方反映资产增加，负债、所有者权益减少，费用减少，收入增加；贷方所反映的内容与借方正好相反 C．小孙说：借方反映资产增加，负债、所有者权益减少，费用增力醌，收入减少；贷方所反映的内容与借方正好相反 D．小李说：借方反映资产减少，负债、所有者权益增加，费用增加》收入减少；贷方所反映的内容与借方正好相反
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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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下面电子邮箱地址格式正确的是()。
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衡量测量精度的指标有中误差、（）、相对中误差。