酸碱的滴定突跃与酸碱的电离级数无关，无论酸碱有几级电离，都只有一个滴定突跃。( )
参考答案：错
What ___________ the life like in the north , do you know?[ ]
A. does
B. will
C. would
D. is
无尿是指24小时尿量（）
A.<100ml
B.<200ml
C.<300ml
D.<400ml
E.<500ml
