试题与答案

钢管混凝土拱桥因管内混凝土受到钢管的约束,在承受轴向压力时,发生的()受到限制而处于

题型:单项选择题

题目:

钢管混凝土拱桥因管内混凝土受到钢管的约束,在承受轴向压力时,发生的()受到限制而处于三向受压状态。

A、变形

B、局部失稳

C、侧向膨胀

D、双向膨胀

答案:

参考答案:C

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Euthanasia has been a topic of controversy in Europe since at least 1936. On an average of six times a day, a doctor in Holland practices "active" euthanasia: (1) administering a lethal drug to a (2) ill patient who has asked to be relieved (3) suffering. Twenty times a day, life prolonging treatment is withheld or withdrawn (4) there is no hope that it can (5) an ultimate cure. "Active" euthanasia remains a crime on the Dutch statute books, punishable (6) 12 years in prison. But a series of court cases over the past 15 years has made it clear that a competent physician who (7) it out will not be prosecuted.

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