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在超声探头远场区,()。
平均增长速度等于平均发展速度减1()
各种信号机及表示器,在正常情况下的显示距离调车:不得小于()
站内的道岔及股道由谁编号?
下列除哪项外均为中央型肺癌转移的表现( )
身体强直,目难正视,疮流血水,惊悸时作,是( )。
总风缸有何用途?
某女,65岁,时常感到心悸,胸闷,头晕,低血压,出汗,严重者时出现晕厥,经诊断为心律失常,建议其服用普鲁卡因胺。长期服用可引起甲状腺功能降低的药物是
西方人文精神经历了三次大的演进和变化,涌现出许多时代巨人,发出具有震撼力的时代呐喊。下列人物和主张的连线,正确的是()
全国名茶“井冈翠绿”盛产于( )。
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