患者,男性,37岁,因上呼吸道感染入院,遵医嘱给予补液抗感染治疗。护士在巡视病房时发现输液不滴,注射部位无肿胀,挤压无回血,有阻力。正确的处理方法是( )
A. 抬高输液瓶
B. 另选静脉更换针头重新穿刺
C. 变换肢体位置
D. 输液局部湿热敷
E. 用力挤压输液管直至输液通畅
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患者,男性,36岁,因发热、咳嗽入院治疗。遵医嘱用0.9%氯化钠溶液1000ml加青霉素800万U静脉滴注。该患者输液过程中错误的护理措施是( )
A. 加强巡视及时更换输液瓶
B. 注意输液管有无扭曲
C. 观察滴速是否合适
D. 溶液不滴立即拔针,更换针头重新穿刺
E. 耐心听取患者主诉
关于品质因数，下面说法正确的有 。
A. 串联谐振的品质因数为电感电压的有效值除以电阻电压的有效值。
B. 并联谐振的品质因数为电感电流的有效值除以电阻电流的有效值。
C. 品质因数越大，串联RLC电路的电流随频率的增加下降越快。
D. 品质因数越大越好。
E. 品质因数越大，并联RLC电路的电压随频率的减小下降越快。
23. In Tim Black's company, which people usually get relocated abroad?
A. those who have previous experience of working abroad
B. those who have specific skills to offer
C. those who are more senior
24. What reason does Tim give for companies sending fewer employees abroad?
A. There aren't enough suitable candidates.
B. Companies are less willing to fund it.
C. Working abroad is no longer seen as leading to promotion.
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