A:0,π2∪π,4
B:0,π2∪4,+∞)
C:0,π2∪π,4
D:(π2,4
写出下列物质的电离方程式:
(1)NaCl ____
(2)H2SO4 ____
—Besides Kate,Linda also took part in the party.
— So many of you were there.