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问题 单项选择题

吕先生，58岁，股骨颈骨折卧床，为防止压疮的发生，最主要的护理措施是______

A．观察皮肤颜色、温度改变 B．全背按摩
C．经常更换卧位
D．加强营养
E．向家属讲解压疮发生的原因

答案

参考答案：C

单项选择题

Which of the following statements can be inferred from the passage
a. An investor of trading stocks only cares about the fixed assets of companies.
b. A buyer of investing stocks is always concerned about the performance of companies.
c. Most people keep their investing stocks for a longer period of time.
d. All people buy trading stocks and investing stock at the same time.
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判断题

电击致命的主要原因是电流通过人体会引起心室颤动或窒息。
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