圈梁遇洞口中断,所设的附加圈梁与原圈梁的搭接长度应满足()。
圈梁遇洞口中断,所设的附加圈梁与原圈梁的搭接长度应满足( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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