一个圆锥形的漏斗,它的容积是94.2立方厘米,底面半径3厘米,求漏斗的高.
94.2×3÷(3.14×32)
=282.6÷28.26,
=10(厘米);
答:漏斗的高是10厘米.
______ in his studies, he didn't know that all the others had left.
A.Buried
B.Burying
C.Having buried
D.Bury
在影响教育的个人需求的动因中,人们希望通过教育提高个人素质的审美水平的需求是()
A.社会地位需求
B.审美生活需求
C.精神生活需求
D.求知生活需求