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【多选题】
请参见图示。根据图示的路由器输出，可以作出哪两项结论？（）A.
使能口令已经加密
B.
service password-encryption命令尚未添加到配置中
C.
图中显示的口令会限制对路由器控制台的访问
D.
访问特权模式的口令是sys#op
E.
要进入此路由器的特权执行模式，需要输入图中显示的口令
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【简答题】Why do historians disagree?
【单选题】Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492—new estimates of which jump as high as 100 million, o...
A.
recur more frequently than chronic diseases.
B.
involve populations with no prior exposure to a disease.
C.
usually involve a number of interacting diseases.
D.
are less responsive to medical treatment than are other diseases.
【单选题】Why do historians disagree with each other?
A.
They stand in different places.
B.
They just pick up the most important facts they believe.
C.
They are not good friends.
D.
both B and C
【简答题】何谓“五行”?其各自的特性是什么?
【多选题】Why do historians disagree? There are three reasons:__________.
A.
The historians read different history books.
B.
Selection of different facts about the same .
C.
Use of the same facts from different premises.
D.
ysis of different levels of cause and effect.
【单选题】People often wonder why historians go to so much trouble to preserve millions of books, documents and records of the past. Why do we have libraries? What (1)_____ are these documents and the (2)_____ ...
A.
right
B.
good
C.
important
D.
fine
【单选题】Why do American families become smaller?
A.
Big families tend to cause the parents to get divorced.
B.
More children mean more cost of their education.
C.
They have to carry out family planning program.
D.
Children are likely to be spoiled in big families.
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