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【多选题】
有砟轨道由哪些结构组成A.
钢轨
B.
道床
C.
轨枕
D.
道岔
E.
连接零件
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【单选题】关于心跳骤停紧急处理原则,下列哪项是错误的( )
A.
迅速开始人工呼吸
B.
待心电图确诊后开始胸外心脏按压
C.
立即开放静脉输液通道
D.
立即开始胸外心脏按压
E.
准备好电极除颤
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A.
when
B.
that
C.
where
D.
by which
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