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参考答案:错
— Welcome to ______ school.
— Thanks. Your school is very nice.
A.his
B.your
C.their
D.our
气管内插管对气道死腔量的影响是()
A.使气道死腔量减少约50%
B.使气道死腔量增加约50%
C.使气道死腔量增加约30%
D.使气道死腔量减少约30%
E.无影响