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问题 填空题

已知硝酸钾的溶解度受温度影响较大，且它的溶解度随温度的升高而增大．如图所示，将浓硫酸缓缓倒入盛有水的烧杯中，烧杯中放置了盛有某温度下与少量硝酸钾晶体共存的饱和硝酸钾溶液，并用玻璃棒不断搅拌，此时可看到 _________ ，这是因为 _________ ．

答案

硝酸钾晶体逐渐溶解变少；浓硫酸与水混合，放出大量的热，使硝酸钾溶解度变大

单项选择题 A1/A2型题

下列哪种病变可导致患者体检发现颈动脉异常搏动（）.

A.缩窄型心包炎

B.急性右心室心肌梗死

C.甲状腺功能亢进

D.预激综合征

E.二尖瓣关闭不全
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单项选择题

A certified nursing assistant (CNA) is caring for a client with Clostridium difficile diarrhea and asks the charge nurse, "How can I keep from catching this from the client" The nurse reminds the CNA to wash her hands and to ensure the client is placed

A. on protective isolation.
B. on neutropenic precautions.
C. in a negative-pressure room.
D. on contact isolation.
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