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【单选题】
A healthcare executive is using regression to predict total revenues. She is deciding whether or not to include both patient length of stay and insurance type in her model. Her first regression model only included patient length of stay. The resulting r2 was .83, with an adjusted r2 of .82 and her level of significance was .003. In the second model, she included both patient length of stay and insurance type. The r2 was .84 and the adjusted r2 was .80 for the second model and the level of significance did not change. Which of the following statements is true?A.
The second model is a better model.
B.
The first model is a better model.
C.
The r2 increased when additional variables were added because these variables significantly contribute to the prediction of total revenues.
D.
The adjusted r2 always increases when additional variables are added to the model.
E.
None of the above statements are true.
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【单选题】以下关于建设工程项目施工总承包模式与施工总承包管理模式的叙述中，正确的是( )。
A.
施工总承包模式可以在很大程度上缩短建设周期
B.
采用施工总承包管理模式时，对各个分包单位的工程款项，一般由施工总承包管理单位负责支付
C.
施工总承包管理单位的招标可以不依赖完整的施工图
D.
当采用施工总承包模式时，分包合同由业主与分包单位直接签订
【简答题】Different from the past, now more and more fibre projects are carried out in ______.
【单选题】Now more and more Chinese attach more importance to _____. [ ]
A.
use
B.
using
C.
uses
D.
used
【单选题】Now more and more people agree that the universe is even more than we originally thought. [ ]
A.
complex
B.
ordinary
C.
standard
D.
abstract
【单选题】― Are you full now? ― No. I want ap ple pies. [ ]
A.
more one
B.
one more
C.
more two
D.
two more
【单选题】Now more and more Japanese businesses are ___________ encouraging their employees to work less hard.
A.
startlingly
B.
enormously
C.
vigorously
D.
dramatically
【单选题】关于建设工程项目施工总承包模式与施工总承包管理模式的叙述中，正确的是（）。
A.
施工总承包模式可以在很大程度上缩短建设周期
B.
采用施工总承包管理模式时，对各个分包单位的工程款项，一般由施工总承包管理单位负责支付
C.
施工总承包管理单位的招标可以不依赖完整的施工图
D.
当采用施工总承包模式时，分包合同由业主与分包单位直接签订
【简答题】vt.装饰,点缀,美化 n.装饰,点缀,装饰品
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