【多选题】【消耗次数：1】
关于胃的叙述,下列哪项是错误的()
①
A.入口为幽门
②
B.出口称幽门平对第11胸椎
③
C.胃大弯凹陷而且短
④
D.胃大部分位于右季肋区
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向胃管内注入10～20ml空气
②
向胃管内注入10～20ml开水
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抽出液遇石蕊试纸变红色
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注入10ml空气，同时在胃部听到气过水声
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