已知C20(40)碎石现浇混凝土单梁的定额基价为258684元/10m3,每10m3使用C20(40)混凝土1015m3,C20(40)混凝土单价为17097元/m3,C25C20(40)混凝土单价为18311元/m3,C25C20(40)碎石现浇混凝土单梁的定额基价为___元。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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