酸性食糜进入小肠引起大量胰液分泌的主要机制是
A．交感神经兴奋
B．迷走神经兴奋
C．小肠黏膜释放促胃液素
D．小肠黏膜释放促胰液素
参考答案：D
Practising Chinese kung fu can not only _____ one's strength, but also develop one's character. [ ]
A. bring up
B. take up
C. build up
D. pull up
脱落细胞标本来源于()
A．痰液
B．胸水
C．腹水
D．尿液
E．骨髓推片
