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【单选题】
某慢性肺心病患者 , 缺氧和二氧化碳潴留同时存在 , 应给予A.
高浓度 , 高流量 , 持续给氧
B.
高浓度 , 高流量 , 间断给氧
C.
低浓度 , 低流量 , 持续给氧
D.
低浓度 , 低流量 , 间断给氧
E.
先高浓度 , 后低浓度给氧
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【单选题】One of the predictions of the HO model is that
A.
countries with different factor endowments but similar technologies and preferences will have a strong basis for trade with each other.
B.
countries will tend to specialize, but not completely, in their comparative advantage good.
C.
reciprocal demand leads to an equilibrium terms of trade by inducing changes in both demand and supply.
D.
All of the above.
【简答题】指出下列各种遗传现象是属于哪一种细胞质基因所决定的: a.紫茉莉花斑遗传是受____ ______ ___所决定;b.草履虫放毒性遗传是 所决定。
【单选题】One of the predictions of the HO model is that
A.
countries with different factor endowments but similar technologies and preferences will have a strong basis for trade with each other.
B.
countries will tend to specialize, but not completely, in their comparative advantage good.
C.
reciprocal demand leads to an equilibrium terms of trade by inducing changes in both demand and supply.
D.
All of the above.
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