Ⅱ型呼吸衰竭是指PaO2______,PaCO2______,其氧疗原则是______。
参考答案:小于60‖大于50‖低浓度持续吸氧
Which of the following most accurately describes the passage
A.(A) A description of a replicable experiment
B.(B) A summary report of new findings
C.(C) A recommendation for pursuing a new area of research
D.(D) A refutation of an earlier hypothesis
E.(E) A confirmation of an earlier research
《部标》对客运乘务人员仪容仪表的着装标准是怎样规定的?