A:NaCl是非电解质
B:NaCl溶液是电解质
C:NaCl在溶液中电离出了可以自由移动的离子
D:NaCl溶液中的水电离出大量的离子
Try to guess its meaning when you meet a new word. Don't _____ your dictionary all the time.
0.8=____ 1.4=____ 0.25=____ 0.6=____
(Ⅰ)求a,b的值及函数f(x)的单调区间;
(Ⅱ)若对x∈﹣2,3,不等式f(x)+ 32 c<c2恒成立,求c的取值范围.
(203÷7+21)÷5=30