A:Could you bring me the bill
B:Would you like me to give you a lift
C:Could you tell me the postcode for Patia
D:Would you like to have my e-mail address.
我国宪法规定:“中华人民共和国公民在法律面前一律平等”。这表明,我国公民平等地( )
①享有权利 ②履行义务 ③适用法律 ④制定法律
(Ⅰ)求f(x)的最小正周期、零点;
(Ⅱ)求f(x)在区间 π24,3π4 上的最大值和最小值.
某温度下,体积和pH都相同的盐酸和氯化铵溶液加水稀释时的pH变化曲线如图所示,下列判断正确的是( )