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举一反三
【单选题】The passage states that polls can benefit industry by ______.
A.
reducing waste
B.
establishing fair prices
C.
strengthening people's faith in business
D.
saving small businesses
【单选题】What does the speaker think of public opinion polls?
A.
He thinks it is the dawn of a more democratic era.
B.
He thinks politicians are responsive to real public concerns.
C.
He thinks the publics’ input to the political process will no longer be limited.
D.
He thinks opinion polls are used and reported in high selective ways.
【单选题】Which one of the following statements is TRUE of the traditional 'small data' polls?
A.
Traditional pollsters don't actually asking questions.
B.
Traditional pollsters can gel a sense of the race, age, and gender of their samples and make corrections accordingly.
C.
Traditional 'small data' polls is a better method than 'big data' analysis of online conversations.
D.
Traditional 'small data' polls made more high-profile misses than 'big data' polls.
【单选题】女性，50岁，患风湿性心脏病二尖瓣狭窄25年，1年来活动后心悸气短，双下肢水肿，1个月来胸闷气短明显加重，愿高枕右侧卧，伴腹胀，尿少。既往有肝炎、肺结核病史。查体：T37.2℃，心率92次/分，巩膜轻度黄染，右肺呼吸音消失，左肺可闻散布小水泡音，心脏扩大，心房颤动，心尖部可闻舒张期隆隆样杂音，肝助下3.0cm，质中硬。X线发现右侧胸腔积液。该患者产生右侧胸腔积液的最大可能病因是
A.
结核性
B.
风湿性
C.
肝硬化性
D.
心力衰竭
E.
肺炎
【单选题】以下检索出文献量最少的检索式是
A.
A and B or C
B.
A and B
C.
A and B and C
D.
A or B
E.
( A or B) and C
【单选题】女性，50岁，患风湿性心脏病二尖瓣狭窄25年，1年来活动后心悸气短，双下肢水肿。1个月来胸闷气短明显加重，愿高枕右侧卧，伴腹胀，尿少。既往有肝炎、肺结核病史。查体：T37.2℃，心率92次/分，巩膜轻度黄染，右肺呼吸音消失，左肺可闻散在小水泡音，心脏扩大，心房颤动，心尖部可闻舒张期隆隆样杂音，肝肋下3.0cm，质中硬。X线发现右侧胸腔积液。该患者产生右侧胸腔积液的最大可能病因是
A.
结核性
B.
风湿性
C.
肝硬化性
D.
心力衰竭
E.
肺炎
【单选题】女,50岁,肝硬化腹水患者,尿少,双下肢浮肿,脉搏140次/分,呼吸38次/分,端坐位,有脐疝。治疗首选
A.
强心剂
B.
口服利尿剂
C.
补液
D.
导泻
E.
静脉注射白蛋白
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