维持胸内负压的必要条件是
A.胸膜腔密闭状态B.呼吸肌收缩C.胸廓扩张D.呼吸肌舒张E.呼吸道存在一定阻力
参考答案:A
该患儿最可能的诊断是
A.新生儿脐炎
B.新生儿败血症
C.新生儿硬肿症
D.新生儿颅内出血
E.新生儿生理性黄疸化脓性脑膜炎足月新生儿早产儿低出生体重儿新生儿高胆红素血症
It was()of you not to play the piano while I was having a sleep.
A.considerate
B.careful
C.considering
D.considerable