【单选题】设 r=10,下列选项中,计算结果为 314 的表达式是( )。
A.
Math.PI.toFixed(2) * r * r
B.
Math.ceil(Math.PI) * r * r
C.
Math.floor(Math.PI) * r * r
D.
Math.round(Math.PI) * r * r
【单选题】关于math库说法错误的是( )。
A.
可以通过 “ from math import * ” 的方式导入
C.
使用dir(math)可以看到math库中所有的内建函数
【多选题】关于math模块,下列选项中说法正确的是()
A.
math模块中提供了4个常数,分别为pi、e、inf、nan
B.
math模块中floor()函数表示向下取整
C.
.math模块中fsum()函数可以提高浮点数的准确度
【单选题】Our preferences for certain colors are ______.
A.
associated with the time of the day
B.
depended on our character
C.
linked with our primitive ancestors
D.
partly due to psychological factors
【单选题】The livelihood of each species in the vast and intricate assemblage of living things depends on the existence of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps t...
A.
How parasites reproduce.
B.
How organisms react to invaders.
C.
How antibiotics work to cure disease.
D.
How the immune system of vertebrates developed.
【单选题】What does the man think of Frank? 查看材料
D.
He is a flexible person.