皮皮学，免费搜题
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搜题
【单选题】
肺心病肺动脉高压形成的解剖因素是A.
慢性缺氧所致肺血管重建
B.
缺氧性肺血管收缩
C.
支气管肺感染和阻塞
D.
血液粘稠度增加
E.
气道炎症
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If net capital outflow is positive, then:
A.
exports must be positive.
B.
exports must be negative.
C.
the trade balance must be positive.
D.
the trade balance must be negative.
【简答题】计算原煤的密度组成如何计算
【简答题】正相关(positive correlation)
【单选题】Zhengnengliang, or positive energy, _______a term used in the book Positive Energy by Richard Wiseman, has developed into a popular phrase in Chinese society where people approach life with optimism a...
A.
naturally
B.
originally
C.
roughly
D.
constantly
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