A:10℃20mL 3mol/L的X溶液
B:20℃l0mL 5mol/L的X溶液
C:20℃30mL 2mol/L的X溶液
D:10℃l0mL2mol/L的X溶液
动物细胞的细胞质的功能是( )
下列命题正确的是( )
You shouldn't accept a lift from a person ________ you don't know him.
正义是人类良知的声音。下列做法属于正义行为的是( )