题目内容

程控交换机电源系统全程放电回路电压降规定为:()。

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纤溶系统由()、纤溶酶、()、纤溶酶原活化素组成。

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The crankshafts on the large modern 2-stroke crosshead engines are ()big ()makes as a single unit and so are constructed by joining together individual forgings.

A. enough;to
B. too;to
C. such;so
D. so;that

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