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【单选题】
下列哪个国家不属于全球最典型的自由贸易区的北美自由贸易区?( )A.
美国
B.
加拿大
C.
墨西哥
D.
法国
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反馈参考答案：
举一反三
【简答题】预应力筋的张拉程序为0→1.05σcon→σcon或0→1.03σcon,采用超张拉的目的是为了减少 _ 。
【简答题】A．This effort will apprise land's use rights before contracting lease. B．Add to the State revenue. C．Improve the management of the land. D．Ensure the best use of land resources and control its redistr...
【单选题】The United States produced higher crop harvests before roads took away land and pollution affected crops.
A.
Y
B.
N
C.
NG
【单选题】Before the first nonstop flight made in 1949, it_____ necessary for all planes to land for refueling.
A.
would be
B.
has been
C.
had been
D.
would have been
【单选题】______ he returns to his native land.
A.
It is long before since
B.
It is before long that
C.
It won’t be long before
D.
It will be long after
【单选题】_____ he will return to his native land. [ ]
A.
It is long before that
B.
It is before long that
C.
It won't be long before
D.
It will be long before that
【单选题】Many People depended on the land for a living before the 17th century（ ）
A.
Right
B.
Wrong
C.
Not mentioned
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