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【单选题】
使用电动吸引器吸痰时，错误的是A.
使用前先调节负压，成人的吸痰负压为40～53.3kPa
B.
吸痰前病人头部转向护士，取下活动的义齿
C.
吸痰时先吸净口腔咽喉部分泌物，再吸净气管内分泌物
D.
吸痰时上下转动吸痰管，边向外提拉
E.
每次吸痰时间不超过15秒
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举一反三
【简答题】输入圆的半径,输出圆的面积和周长,保留二位小数。 PI=3.14
【单选题】Usually there is ______ traffic in the streets on weekdays than on Sundays.
A.
little
B.
less
C.
few
D.
fewer
【单选题】Private cars are required to take turns off roads one out of five weekdays ___the traffic pressure.
A.
relieve
B.
relieving
C.
torelieve
D.
relieve
【单选题】According to the study discussed in the second paragraph, which of the following weekdays is the most productive?
A.
Friday.
B.
Wednesday.
C.
Monday.
D.
Thursday.
【单选题】They go to school by bus on weekdays. (变成一般疑问句)
A.
Are they go to school by bus on weekdays?
B.
Does they go to school by bus on weekdays?
C.
Is they go to school by bus on weekdays?
D.
Do they go to school by bus on weekdays?
【简答题】A．Everyday. B．Weekends. C．Weekdays. D．Seldom.
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