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【简答题】
女士, 67岁,因“咳嗽、咳痰十年,加重一天”以“慢性支气管炎急性发作”收入院。入院检查:一般状态好,生命体征正常,双肺呼吸音稍粗,右下肺湿啰音。老师为了让同学们对胸部叩击检查有感性认识,对患者进行了胸部叩击示教。示教结束后,为了加深理解,要求对患者进行胸部叩击,因遭到患者拒绝求助老师,老师也拒绝了的请求。 问题:( 1)请思考老师拒绝的要求错误在哪? ( 2)从上述案例中针对需要给患者操作的教学,作为老师有什么启示?
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举一反三
【单选题】Which of the following statements describes the definition of systematic sampling?
A.
Every nth number of the population is selected
B.
Every element of one definable sub-section of the population is selected
C.
Each element of the population has an equal chance of being chosen
D.
This method needs investigating prior information in advance
【简答题】听下面一段对话，回答第1-3小题。 1. What is the probable relationship between the speakers? A. Friends B. Classmates C. Co-workers 2. What does the man like to do? A. To cycle. B. To garden. C. To climb mountains. 3...
【多选题】Which of the following statement about systematic sampling is/are true?
A.
Sample members are selected from the sampling frame according to a random starting point and a fixed, periodic interval.
B.
The interval, called the sampling interval Kth, is calculated by dividing the population size N, by the desired sample size n. Kth=N/n
C.
The starting point can be obtained in a lottery method.
D.
The starting point can be obtained by using a random number table.
E.
It is a method belonging to non-probability sampling.
【简答题】90°偏刀主要用来车削（）的工件。
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