新生儿经清理呼吸道后仍无呼吸时应进行
A.清理呼吸道
B.触觉刺激
C.机械通气
D.持续气道正压通气
E.应用复苏气囊正压通气加压给氧
参考答案：B
根据句意或首字母填空，每空一词。
1. The weather in China is very d_______ from that in English.
2. Petrels not g _______ at p_______.He should work hard at the subject.
3. Lucy and Lily have o_______ views and i_______. Lucy likes staying in and reading,
but Lily likes going out and meeting people.
4. My son is a q_______ boy. He likes to stay at home and read.
5. We must keep c_______ in front of danger.
放射治疗使用的准直器的精度应（）
A.<1mm
B.<2mm
C.<3mm
D.<4mm
E.<5mm
