下列过程中，只发生了物理变化的是 请选择DCBA's8s4})J6X*k/X/k({9i*`,|*x2u4g1A7x
A．铁生锈({9i*`,|*x2u4g1A7x
B．粮食酿酒({9i*`,|*x2u4g1A7x
C．食醋除水垢({9i*`,|*x2u4g1A7x
D．冰雪融化({9i*`,|*x2u4g1A7x