PbI2的溶解度为1.52×10-3mol/L,它的溶解积常数为:()
A.1.40×10-8
B.3.50×10-7
C.2.31×10-6
D.2.80×10-8
参考答案:A
People like to make friends with shares their interests.
A.whom
B.whomever
C.whoever
D.who
设f(x)连续,且,则f(x)=()。