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【单选题】
关于喉罩置入的操作，下列叙述错误的是（）。A.
置人喉罩前在密封罩和润滑剂
B.
借助喉镜上抬舌体，避免将会厌向下推
C.
右手持喉罩顺患者舌正中一直插至咽喉部
D.
直入后加压通气，判断有否漏气及位置是否正常
E.
为了防止咬管使用口咽通气道固定导管
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【单选题】---- Would you like to go travelling with me to New York, Benjamin? ---- Sorry, I’m busy, for the final examination is coming. So I ____________ hard throughout the next several weeks.
A.
have worked
B.
have been working
C.
work
D.
will be working
【简答题】__________ [A] maintenance [B] protection [C] care [D] attention
【简答题】A．Pottery and car maintenance. B．Car maintenance and Spanish conversation. C．Folk guitar and Spanish conversation D．Spanish conversation and keep-fit.
【简答题】[A] management [B] maintenance [C] conservation [D] protection
【简答题】砷盐的检查中导气管中填充的醋酸铅棉花起什么作用?
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