肺通气的原动力是
A.大气压与肺内压之间的压力差
B.呼吸运动
C.胸内压
D.肺泡表面张力
正确答案是B
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Complete each of the following sentences with a (compound) word derived from the one(s) given in brackets.
The will to win and the desire to succeed are the keys that will
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