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【单选题】
下面关于等效应力的特点描述中,错误的是:( )A.
等效应力是一个不变量
B.
等效应力在数值上等于单向均匀拉伸（或压缩）时的拉伸（或压缩）应力
C.
等效应力代表某一实际表面上的应力，能在某一特定平面上表示出来
D.
等效应力可以理解为代表一点应力状态中应力偏的综合作用
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举一反三
【单选题】They __________ in the suburb when she was only a child.
A.
Live
B.
lived
C.
are living
D.
have lived
【简答题】Decide whether the following statements are true(T) or false(F), based on the article. Last year, the writer's family conducted a 5-week experiment of living with only one car in the suburbs of Sydney...
【简答题】氨茶碱和麻黄碱主要作用是 ( )平滑肌,临床常用来治疗( )
【单选题】They ____ in the suburb when she was only a child.
A.
lived
B.
live
C.
living
D.
lives
【单选题】In America, many people enjoy living in a big in the suburb.
A.
city
B.
home
C.
family
D.
house
【单选题】Turning their nose up at the audience, they ________ the people living in the suburb.
A.
look for
B.
look down on
C.
look up to
D.
look out
【简答题】adj. [数] 周期的;定期的;n. 期刊;杂志
【判断题】Suburb living combines the advantages of safer and more intimate small-town life, which is very popular in the US.
A.
正确
B.
错误
【简答题】adj. 定期的,周期的
【单选题】Turning their nose up at the audience, they ________ the people living in the suburb.
A.
looked for
B.
looked down on
C.
looked up to
D.
looked out
相关题目：
【单选题】In America, many people enjoy living in a big in the suburb.
A.
city
B.
home
C.
family
D.
house