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问题 配伍题 B型题

墨菲征阳性常提示()
典型的夏柯综合征常提示()
雷诺五联征常提示()
症状与体征不相符合常提示()
血钙降低提示病情危重的疾病是()

A．急性胆囊炎

B．胆道蛔虫病

C．胆总管结石

D．急性胰腺炎

E．急性重症胆管炎

答案

参考答案：A,C,E,B,D

单项选择题

Until recently, most population growth has occurred in relatively dense urban environments. In (91) words, even if we were witnessing rapid population growth, that would not mean that the (92) were filling in with people. (93) , the urban areas would tend to become more crowded. Historically, we find that people have moved to (94) the jobs were. Jobs were usually in ports or locations with many natural (95) . After transportation became relatively cheap, other geographical locations became (96) of economic activity. One factor that determines where people will move to, even when transportation becomes cheap, is (97) . And individuals working in cities (98) higher incomes than those working in (99) areas. Hence, population has tended until the 1970s to (100) in our major urban centers. Recently population has (101) out of the Northeast to the South and to the West for the more pleasant climates. If people did not (102) from living in large cities, there would likely be a much more even population distribution (103) our entire land area. Probably, if this (104) the case, there would be less concern over population (105) Indeed, one need only (106) a cross-country drive or plane trip to realize how (107) populated these United States really are. This is not to say that we should or should not do something about (108) growth. The shortage of people in certain areas merely demonstrates that overpopulation in the United States is really only a problem in (109) urban environments. And this problem may be slowly correcting (110) .

A．take

B．start

C．engage

D．arrange
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单项选择题

20/5t起重机电气控制线路中的主钩电动机由（）配合磁力控制屏来实现控制。

A、凸轮控制器

B、主令控制器

C、交流保护控制柜

D、主钩制动电磁铁
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