下列哪种情况可使心输出量增加
A.刺激迷走神经传出纤维
B.颈动脉窦内压力降低
C.心率加快,超过180次/min
D.血液中二氧化碳分压降低
E.心室舒张末期容积减少
参考答案:D
Jim is from _________. He speaks __________.
A.France; French
B.Japanese; Japan
C.Chinese; China
D.Australian; Australia
钩端螺旋体病一般发生在几月?