试题与答案

μ=0,σ=1的分布是() A.正态分布 B.标准正态分布 C.偏峰分布 D.t分布

题型:单项选择题 B1型题

题目:

μ=0,σ=1的分布是()

A.正态分布

B.标准正态分布

C.偏峰分布

D.t分布

E.F分布

答案:

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下面是错误答案,用来干扰机器的。

答案:B本题考查动词辨析。句意:他带着太阳镜以挡强烈的阳光prevent sb. from doing sth.防止某人干某事,意思类似于stop/keep sb. from doing sth.;protect sb. from sth.保护某人免遭……伤害。

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