题目内容

关于动力系数,下列描述错误的是

A. 动力系数反映了场地类别的影响
B. 动力系数反映了设计地震分组的影响
C. 动力系数反映了地震基本烈度的影响
D. 动力系数表示了质点的最大绝对加速度比地面最大加速度放大了多少倍

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更多问题

场地越软,反应谱峰值偏长周期。这是因为,软弱场地,地震动以长周期为主,所以由于共振效应,长周期结构反应大。

A. 对
B. 错

已知某地的地震系数为0.20,动力系数为2.25,该地的地震影响系数为0.25

A. 对
B. 错

6多选(3分)地震动的三要素包括

A. 振幅
B. 震级
C. 持时
D. 频谱

请根据文章内容把短文补充完整Here are several suggestions on your new life at college. First, you should be more______1_______ at college than before. You must start from making your own decisionsand taking responsibilities for everything you do. Next, try to make full use of the______2_______. You will learn more there than only in class. Besides, be active in clubs andvarious _______3______ on the campus, and you'll find it helpful to ________4_________ andimprove your communication ability. Finally, to get along well with your roommates, youmust respect their _______5_________ and be frank. They may become your lifelong friends.

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