The organs that take part in production of speech sounds are called____（）
A. speech production
B. pharyngeal cavity
C. nasal cavity
D. speech organs
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按照所获资本时间点分类，资本运营可分为：I. 实业资本运营； II.存量资本运营； III.内部管理型资本运营； IV.增量资本运营（）
A. II III
B. I II III
C. II IV
D. I II III IV
Which factor determines the direction of the gas diffuses（）
A. partial pressure difference of the gas
B. gas solubility
C. gas molecular weight
D. affinity between gas molecualr and hemoglobin
E. permeability of the respiratory membrane
Which factor induce the increase of the airway radius（）
A. excitation of sympathetic nerve
B. excitation of parasympathetic nerve
C. release of histamine
D. release of leukotrienes
E. release of endothelin
During the cardiac cycle of a normal healthy young adult（）
A. During the initial stage of ventricular contraction the volume of the ventricle does not change
B. During ventricular diastole the pressure in the left ventricle is close to 80 mm Hg （10.6 kPa）
C. During ventricular systole, all the blood in the ventricles is ejected
D. At the end of ejection, the blood pressure reached the highest level
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