()是一种自动排泄蒸汽管道的凝结水,并能阻止蒸汽流出的阀件。
A、减压阀
B、疏水器
C、溢流阀
D、蝶阀
参考答案:B
I don't think it's good to copy other's homework. You should _________ it. [ ]
A. get over
B. get on
C. get up
D. get off
气管插管操作时的并发症有()。
A.口腔组织损伤
B.高血压、心动过速
C.返流误吸和吸入性肺炎
D.颅内高压
E.喉、支气管痉挛