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【单选题】
关于设计原则和实用设计表达式,下列说法中正确的是( )
A.
规范 SL191-2008 的实用设计表达式采用了安全系数 K ,未考虑各因素的随机性质
B.
结构自重属于可控制的可变荷载,所以规范为它分配了一个较小的分项系数
C.
不是所有的荷载都带有不确定的随机性质
D.
可靠指标 b 与失效概率有一一对应的关系,因此, b 也可作为衡量结构可靠性的一个指标
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参考答案:
举一反三
【判断题】一旦晶体从岩浆中形成,它就不再与残留的熔浆发生反应。
A.
正确
B.
错误
【简答题】I asked him his name, but he didn’t ______________ .
【简答题】氯霉素眼药水,10毫升/支
【单选题】I asked him his name, but he made no _____ .
A.
response
B.
respondent
C.
responding
D.
respond
【单选题】It is said that John's two daughters or his wife ______ to the city where he had an accident.
A.
going
B.
are going
C.
were going
D.
was going
【简答题】One recent Brandeis graduate who asked that his name be withheld because his company ______.
【简答题】Who’s the boy in the photo? Yes, he is Liu Wei, an armless pianist. Liu lost both arms in an accident at the age of 10, but he never gave up his dream of becoming a pianist. He couldn’t find a teacher...
【单选题】I asked him his name, but he made no _____.
A.
respond
B.
respect
C.
respondent
D.
response
【单选题】I asked his name, but he didn't _________.
A.
respond
B.
contact
C.
compare
D.
communicate
【判断题】一旦晶体从岩浆中形成,它就不再与残留的熔浆发生反应。
A.
正确
B.
错误
参考解析:
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