【单选题】In calm breathing, the main source of inspiration resistance is
A.
alveolar liquid-air surface tension
B.
the retraction force of the elastic components of the lung
C.
elastic retraction force of thoracic cage
【简答题】小儿体重为出生时体重的2倍、3倍、4倍分别是什么时候?
【单选题】The main factor affecting peripheral vascular resistance is
B.
Large arterial elasticity
D.
The caliber of arteriole
【单选题】Enzyme inactivation is the main mode of resistance to:
【简答题】使胰岛素分泌增加的是( )A. 血钙浓度升高 B. 血钙浓度降低 C. 血糖浓度升高 C.血糖浓度降低
【判断题】氢脆断口和应力腐蚀开裂断口的明显差别是氢脆断口上很少有二次裂纹。
【单选题】Which of the following is the main mechanism of increased post-capillary resistance at the stagnant hypoxia stage of shock?
A.
the blood flow slow down
B.
increased blood viscosity
D.
WBC adhension to the wall of venous vessels