根据永久收入理论，永久收入的边际消费倾向应该（）当前边际消费倾向。
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During the trial period, the customer pays a reduced amount to rent the machine.
A. Right
B. Wrong
C. Doesn't say
According to the article, why is it significant that buildings way have shops on the first
A. People like to shop on the ground floor of buildings.
B. People can see into the windows on this level.
C. Windows do not support a building as well as walls do.
D. People should not shop in large buildings.
在室内增加隔墙、封闭阳台，属于增加的()。
A. 面荷载
B. 线荷载
C. 均布面荷载
D. 集中荷载
是为了避免温度变化引起结构伸缩应力，使房屋构件产生裂缝而设置的。
A. 伸缩缝
B. 沉降缝
C. 防震缝
D. 墙体空心缝
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