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【单选题】
血中PCO2升高引起呼吸加深加快主要是因为A.
直接刺激中枢的呼吸神经元
B.
刺激中枢化学感受器
C.
刺激颈动脉体和主动脉体感受器
D.
刺激颈动脉主动脉弓感受器
E.
刺激心肺感受器
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