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【简答题】
A．反复发作的肺部感染、咳脓痰 B．声带麻痹 C．颈交感神经综合征 D．痰中带血 E．Cushing综合征 Pancost瘤可伴有
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【简答题】[prə'pɔːʃ(ə)n] n. 部分;份额
【简答题】n.部分,份额_____
【简答题】部分;份额 n.
【简答题】Before the 1830s,most newspapers were sold through annual subscriptions in America, usually $8 to $10 a year. Today $8 or $10 seems a small amount of money, but at that time these amounts were forbidd...
【单选题】有关Waston和Crick提出的DNA双螺旋结构模型,说法错误的是
A.
组成双螺旋的两条链反向平行
B.
碱基对位于双螺旋的内侧
C.
维系双螺旋结构的作用力主要是碱基堆积力
D.
DNA双链是左手螺旋
【简答题】阅读理解 A Before the 1830s,most newspapers were sold through annual subscriptions in America, usually $8 to $10 a year. Today $8 or $10 seems a small amount of money, but at that time these amounts were ...
【简答题】N. 部分;份额; 比率,比例
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