正态分布曲线下，横轴上，从均数μ到μ+2.58S的面积为A．47.5% B．49.5_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

正态分布曲线下，横轴上，从均数μ到μ+2.58S的面积为

A．47.5%

B．49.5%

C．99%

D．97.5%

E．5%

答案

参考答案：B

选择题

–Do you know the man ________ visited the United States in February?

--Yes. He is Chinese Vice-President Xi Jinping. He said it was his ____ visit to the United States.

A．/, five

B．that, five

C．who, fifth

D．which, fifth

单项选择题

“仁者以天地万物为一体”是（）的观点。

A.程颢

B.程颐

C.朱熹

D.张载