/p/ and /b/ can appear in initial position （as in pin and bin） and also in final position （as in rope and robe）．They are in phonemic contrast and said to form a___ because they occur in the same envir
A. complementary distribution
B. allophonic distribution
C. minimal pair
D. segmental phoneme
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The organs that take part in production of speech sounds are called____（）
A. speech production
B. pharyngeal cavity
C. nasal cavity
D. speech organs
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
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