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单选题 患者男性,45岁。反复发生夜间呼吸困难1个月,加重1天就诊,体格检查:血压:180/110mmHg,呼吸急促,双肺散在哮鸣音,双肺底细湿啰音,心率130次/分。如无法在短期内做出鉴别又急需尽快缓解呼吸困难可选用

A、 吗啡
B、 氨茶碱
C、 泼尼松
D、 止咳糖浆
E、 痰液稀释剂

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