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问题 单项选择题

调节器在“手动－自动”切换瞬间（即切换过程中），保持调节器的（）不变，就称为调节器的无扰动切换。

A、测量信号

B、给定信号

C、输出信号

D、偏差信号

答案

参考答案：C

单项选择题

A gravida 2, para 1 with pregnancy-induced hypertension is receiving magnesium sulfate IV, 2g/hour via infusion pump. In assessing the client, the nurse notes a decrease in respirations from 16 to 12 breaths/minute and slightly pink-tinged urine (output is 25mL/hour). The client still complains of feeling sleepy. The nurse’s action should include （）.

A．checking the most recent serum level of magnesium sulfate and notifying the physician of the results.

B．turning the client on her left side and taking vital signs again.

C．flushing the client’s indwelling urinary catheter with sterile normal saline solution to see if it’s draining properly.

D．instructing the client to turn, cough, and deep breathe every 30 minutes.
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解答题
对甲、乙两个地区连续8天的气温统计如下表．（单位：℃）
12345678
甲3231313032313031
乙2224242018191716
（1）甲地这8天气温的众数是多少？平均数呢？分别表示什么？
（2）乙地这8天气温的众数是多少？平均数呢？分别表示什么？
（3）哪个地区的一组数据的众数更具有代表性？
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