-- Can you catch what I said?
-- Sorry, I can understand it.
A:almost
B:hardly
C:nearly
D:never
300mL Al2(SO4)3溶液中,含Al3+为1.62g,在该溶液中加入0.1mol•L﹣1 Ba(OH)2溶液100mL,反应后溶液中SO42﹣的物质的量浓度约为( )
“从点滴做起,共建节约型校园”。以下行为符合该倡议的是( )