()适用于住宅、公寓、旅馆等小开间的民用建筑,在工业建筑中很少采用,此种结构的刚度较大,在水平荷载下侧移小,适用于15~35层的高层建筑。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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