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【多选题】
关于机械吸引清除呼吸道中痰液的做法，正确的有（ ）。A.
机械吸引使用于咳嗽反射减弱或消失者
B.
重症病人在吸痰前后适当提高吸氧浓度
C.
每次吸引时间不超过l5秒
D.
连续吸引操作直至痰液清除干净
E.
吸痰可经鼻气管切开、气管插管处进行
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【单选题】The company turned a deaf ear to the workers’ _____ about their pay and working conditions.
A.
complaints
B.
application
C.
supplies
D.
consequences
【单选题】They ______ their neighbor of playing his radio too loudly.
A.
charged
B.
unsatisfied
C.
complained
D.
accused
【简答题】The last line in the poem “The Wild Honey le” is ______________.
【简答题】Please give some information about the dvelopment and changes of protected cultivation from 1980s to the present in China . 2、 Why can we assure that "greenhouse will almost certainly survive?" 3、 ...
【简答题】11 Please give some information about the dvelopment and changes of protected cultivation from 1980s to the present in China .
【简答题】集成运算放大器是一种采用多级直接耦合的高放大倍数的放大电路。它既能放大缓慢变化的 ,又能放大 。
【简答题】What are the causes of rapid growth of present-day English vocabulary? Will you please give some reasons?
【简答题】口算： 400÷2= 0×58= 120÷6= 0÷10= 30×22= 42×20= 600÷3÷2= 40×90= 68+0= 12×2×5=
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