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问题 多项选择题

断路器控制回路应满足下列哪些要求？（）

A.合闸或跳闸完成后应使命令脉冲自动解除

B.有防止断路器"跳跃"的电气闭锁装置

C.接线应简单可靠，使用电缆芯最少

D.断路器自动合闸后，不需要明显显示信号

答案

参考答案：A, B, C

单项选择题

A primigravida client with acquired immunodeficiency syndrome (AIDS) is in labor at term. In preparing her nursing care plan, the nurse should include which of the following nursing diagnoses ？（）

A．Risk for fetal or maternal injury related to the crisis of childbearing.

B．Risk for infection related to suppressed immune status.

C．Risk for deficient fluid volume related to dehydration.

D．Risk for fetal injury related to uteroplacental insufficiency.
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填空题

焦油加工的主要任务是获得酚、萘、蒽等纯产品和（）等粗产品。
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