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问题 单项选择题 A1型题

有关四肢关节牵引的作用下列那个不是（）。

A、放松痉挛的肌肉

B、保持肌肉的休息态长度

C、利用牵引的重力，使挛缩和粘连的纤维产生更多的塑性缩短

D、治疗和预防肌肉、韧带和关节囊挛缩和粘连形成，恢复和保持关节的正常活动范围

E、使病损关节恢复到正常或接近正常的活动范围

答案

参考答案：C

填空题

在样本的频率分布直方图中，共有4个小长方形，这4个小方形的面积由小到大构成等差数列{an}，已知a2=2a1，且样本容量为400，则小长方形面积最大的一组的频数为 ______．
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单项选择题

Mr. Smith has had a cast applied to his arm as an outpatient in the emergency room. Which of the following home care instructions should the nurse advice for his cast care

A．Use a ruler to reach inside and scratch under the cast.

B．Apply a heating pad to the arm for 24 hours after the injury.

C．Use powder on the skin around the cast.

D．Smell the cast for foul odors.
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