问题
单项选择题
缩唇呼吸的重要性是（）
A.加强呼吸运动
B.减少呼吸困难
C.避免小气道塌陷
D.减轻呼吸肌劳累
E.减少胸痛
答案
参考答案：C
解析：缩唇呼吸是指吸气时用鼻子，呼气时嘴呈缩唇状施加一些抵抗慢慢呼气的方法。此方法气道的内压高，能防止气道的塌陷，使每次通气量上升，呼吸频率、每分通气量降低，可调节呼吸频率。
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缩唇呼吸的重要性是（）
A.加强呼吸运动
B.减少呼吸困难
C.避免小气道塌陷
D.减轻呼吸肌劳累
E.减少胸痛
参考答案：C
解析：缩唇呼吸是指吸气时用鼻子，呼气时嘴呈缩唇状施加一些抵抗慢慢呼气的方法。此方法气道的内压高，能防止气道的塌陷，使每次通气量上升，呼吸频率、每分通气量降低，可调节呼吸频率。
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| The word "sandwich" is an English word. Sandwich was an English 1 .He lived in England about two hundred years ago. Sandwich had a lot of 2 .But he liked 3 cards for money. He often played 4 day and all night. 5 day he played twenty-four hours without. stopping, He did not 6 the card table to eat. He asked his servant(仆人)to 7 him some meat and 8 .So he put some meat between two pieces of bread. He did not want to stop 9 playing cards. From the name of this man,Sandwich,we have the word "sandwich" 10 . | ||||
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