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【单选题】
下图中 “{”所指的距离是( )。A.
随机误差项
B.
残差
C.
的离差
D.
的离差
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皮皮学刷刷变学霸
举一反三
【单选题】Because some ports are becoming increasingly limited in their ability to handle ever-larger ships it is possible that ___.
A.
ship sizes will become smaller
B.
massive government programs will do what is necessary to upgrade the smaller ports
C.
large ships will go to “hub” ports where “feeder” ships will traverse to and from the smaller ports
D.
ocean shipping costs will rapidly decline
【简答题】阅读短文，完成表格。（填符号） always = △ sometimes = □ usually = ○ never = ∕ Hello! I'm John. I always do my homework. Usually I watch TV in the evening. Sometimes I walk to school. I never read books on Sundays. ...
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