二项分布曲线是离散型概率分布曲线
参考答案:对
. You don’t have to know the name of the author to find a book. You _________ find the book by the title.
A.must
B.need
C.can
D.would
下列是某些物品的近似pH,呈碱性的是
A.猕猴桃 pH=3.2
B.食用醋 pH=3.3
C.纯牛奶 pH=6.5
D.苏打水 pH=9.1