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【单选题】
当锅炉内的温度等于该压力对应的饱和温度时,锅炉内可能是( )
A.
饱和水蒸汽
B.
饱和水
C.
湿蒸汽
D.
A或B或C
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A.
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B.
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C.
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D.
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A.
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B.
直线
C.
斜线
D.
以上都可以
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B.
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D.
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【多选题】孕妇有下列情形之一的,医师应当对其进行产前诊断:( )
A.
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B.
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C.
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D.
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E.
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A.
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B.
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C.
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D.
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A.
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B.
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D.
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