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【单选题】
第二产程心脏负担最重是由于A.
腹压加大，内脏血液涌向心脏
B.
周围阻力更为增高
C.
心排血量及平均动脉压增高
D.
肺循环压力增高
E.
以上说法都正确
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【简答题】____________________ meansthe act or process of sorting out ideas, objects, or people into variousclasses, categories, or types that are whole and independent.A. Sentencedefinition B. Definition C. Cl...
【单选题】M onopoly对应
A.
To encroach upon in a way that violates law or the rights of another
B.
o make public or offer for sale (goods or services) with intent to deceive
C.
Exclusive control of a particular market that is marked by the power to control prices and exclude competition and that esp. is developed willfully rather than as the result of superior products or skill
D.
The act or process of distributing
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