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【单选题】
小儿肺炎引起全身各系统病理变化的关腱是:( )A.
毒素作用
B.
组织破坏
C.
机体免疫功能低下
D.
病原体的侵入
E.
缺氧,二氧化碳潴留
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】Factors those are beyond the organisation's direct control, though the organisation may be able to have some influence over them, are _________.
A.
weaknesses
B.
opportunities
C.
threats
D.
strengths
【单选题】______ halfway through the exercise, the teacher changed his mind and collected all our papers.
A.
When only being
B.
When we were only
C.
Being only
D.
Having been
【简答题】儿歌弹唱中,常用的4个升号调是G大调、()大调、()大调和()大调。
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