下列物质中，遇水就变得“冷冰冰”的是 请选择DCBA(V,x-f8U3m0p3P2v+Q8_.J,w9M1B;^2S5e3N
A．氢氧化钠固体0p3P2v+Q8_.J,w9M1B;^2S5e3N
B．生石灰0p3P2v+Q8_.J,w9M1B;^2S5e3N
C．硝酸铵0p3P2v+Q8_.J,w9M1B;^2S5e3N
D．浓硫酸0p3P2v+Q8_.J,w9M1B;^2S5e3N