在732K时反应NH4Cl(s) = NH3(g) + HCl(g)的△rGmΘ为-208kJ mol-1,△rHmΘ为154kJ·mol-1,则反应的△rSmΘ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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