某恒温恒湿空调系统冬季用喷水室喷13.5℃的循环水对空气进行加湿,通过 处理室的风量是7200kg/h,喷水前后空气的干球温度分别为17.5℃和14℃,则喷水室的补水量约为( ).
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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