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【单选题】
患儿，8个月，发热、咳嗽2天。入院诊断为支气管肺炎。入院后2小时，突然烦躁不安，呼吸困难，口发绀，查体：呼吸62次/分，脉搏180次/分，三凹征(＋)，心音低钝，双肺细湿啰音密集，肝肋下4cm，可能发生了( )。A.
脓胸
B.
气胸
C.
肺不张
D.
肺大泡
E.
心力衰竭
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皮皮学刷刷变学霸
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【简答题】向量加法的交换律: 向量加法的交换律:a ⃗+b ⃗=( )
【多选题】下面关于蓄电池说法正确的是()。
A.
只有蓄电池箱1带有温度传感器
B.
蓄电池采用锂电池
C.
蓄电池通过熔断器箱内的熔断器连接到蓄电池充电机
D.
只要辅助逆变器的110DC供电输出仍在工作，蓄电池就不会放电
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【简答题】Bill Gates in His Boyhood As a child (and as an as well) Bill was untidy. It has been said that in order to balance this, Mary drew up weekly clothing plans for him. On Mondays he might go to sc...
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