按动脉血气分析呼吸衰竭分2型:()、()。
参考答案:Ⅰ型,缺氧而无二氧化碳潴留;Ⅱ型,缺氧伴二氧化碳潴留
32. ---Why on earth didn’t you answer the phone?
---I’m sorry, but the doorbell _____ too.
A.is ringing
B.was ringing
C.rang
D.was about to ring
胶浆(溶剂胶浆)