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为了便于统计处理,用“1”表示合格品,用“0”表示不合格品.....
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In international trade, a banker’s letter of credit is not used for the payment of pu..
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梯形断面明渠,底坡是0.0005,边坡系数1.0,粗糙系数0.02,按.....
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下列哪项在GRE序列中不能增加血液的信号强度:A.对比剂B.流动.....
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长管管网,三管并联,第一支路的直径是0.25m,管长是1000m,.....
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Non-firm states the price and discount without leaving room for negotiation.()..
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