9.OSI参考模型按功能将网络划分为7层，其中最上层（第7层）是-湖北继续教育网网校

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[单选题]9.OSI参考模型按功能将网络划分为7层，其中最上层（第7层）是

A应用层

B会话层

C网络层

D传输层

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1. Passage 2 An insistence that Europe Japan create a “level playing field” for trade by agreeing to give U.S. exporters the same access to their markets as foreign companies receive in the United States. This push to expU. S. manufacturing exports is considered essential politically to fulfill President Bill Clinton's campaign promise of more “high-wage, high skill” jobs for Americans. A willingness to impose sanctions on major trading partners to reduce trade barriers abroad, with less patience for drawn-out negotiations. Administration officials see little risk that this more aggressive policy could escalate into a full-fledged trade war that would shock the world's fragile economies. Thus, the administration will not be deterred by complaints that it has moved to “protectionism”. 39.What is the meaning of a “level playing field” for trade? 40.In what way could this push help “fulfill President Bill Clinton's campaign promise”? 41.Why would the administration not be deferred from exercising the more aggressive policy?
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4. 　　Toronto's third City Hall,now known as Old City Hall,was designed by Edward James Len-nox and declared open on Sept.18,1899.　　Created to provide more space for city officials,it turned out to be the largest building in the city and the largest city building in North America at the time.　　Lennox took three years to design the City Hall and it took 11 years to build it.Contemporaries believe that the odd carvings(雕刻)above the Queen Street entrance were actually caricatures(漫画)of councilors at the time.　　Lennox even included himself in the caricatures,on the west side of the central arch(拱门),and left a strange signature in the stonework of the link portions of the building.　　The third City Hall was originally used as councilors'offices and legal offices,but it is used only as a courthouse today.　　When the fourth City Hall(the one we know today)was declared open in 1965,Old City Hall was threatened to be pulled down.It was saved by a group of people called the"Friends of Old City Hall."　　The clock tower stands parallel with the middle of Bay Street,rather than with the center of the building.The bells in the tower were not installed until the building opened.Old City Hall was declared a historical site in 1989.　　(80)The entire structure cost more than .5 million to build at the time.This is equal to$53 million today.
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