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【单选题】
下列表达中,不正确的是( )A.
可靠指标β与失效概率有一一对应的关系,因此,β也可作为衡量结构可靠性的一个指标
B.
R与S的平均值的差值(μ R -μ S )越大时,β就越大;R与S的标准差σ R 和σ S 越小时,β就越小
C.
当抗力R大于荷载效应S时,结构可靠,在此,S与R都是随机变量
D.
目标可靠指标β T 与结构的破坏性质有关,脆性破坏的β T 大,延性破坏的β T 小
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皮皮学刷刷变学霸
举一反三
【单选题】What do we know about the study?
A.
It lasted for five years
B.
It mainly studied women aged 35 to 40
C.
It involved more than 9,000 American women.
D.
It found that working women are more likely to be overweight.
【单选题】What do we know about Ludwig Mies?
A.
He was born in America.
B.
He was born in Italy.
C.
He was born in Germany.
D.
He was born in France.
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