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【单选题】
硝酸甘油扩张血管的作用机制是A.
阻断α1受体
B.
激动β2受体
C.
激动多巴胺
D.
在血管平滑肌内皮细胞产生NO
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【单选题】听力原文： Men sometimes say: 'We are better and cleverer than women. Women never invent things. We do.' It is true that men have invented a lot of useful things: The alphabet, machines, rockets, and guns,...
A.
Men are cleverer than women.
B.
It was the women's invention that changed history.
C.
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D.
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【简答题】()暖气系统()床头灯暖气系统 ( )床头灯
【单选题】听力原文： Men sometimes say: 'We are better and cleverer than women. Women never invent things. We do.' It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns,...
A.
Men are cleverer than women.
B.
Life was difficult and dangerous in ancient times.
C.
It was the women's invention that changed history.
D.
Women's work was at home.
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