A:4mol/L HNO3溶液
B:8mol/L NaOH溶液
C:3mol/L HCl溶液
D:18mol/LH2SO4溶液
每一粒粮食来之不易,所以我们要爱惜。( )
________by many wellknown experts and film stars,the product was very popular at one time.
盐酸、希硫酸在水溶液中都能产生H+,故有许多共同的性质。下列有关叙述正确的是()