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单项选择题

柱塞式液压缸缸体内表面 (　)精加工，行程一般较(  )。 
A、无需要/长   
B、需要/长    
C、无需要/短    
D、需要/短

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未知题型
听力原文：A: Good Evening! Everyone, this is BizchinA.Today’s guest is Eric Finucane from SilverMark InC.Design & BuilD.He is on phone right now!
B: Good Evening! Everybody!
A: Eric! We knew you are working in a very successful, multi-million dollar company, could you tell us why this company becomes so successful?
B: Well, I think its success down to corporate culturE.This culture is something that's been in place for some timE.We're involved in basically every major decision within the company — from setting client expectations to implementing a new dust protection system. As production coordinator, I get to know our customers well, so it was a natural for me to volunteer to call past clients. I loved it and got immediate results.
A：Could you tell us more?
B: We also organize anti-bureaucrat weeks, where all the managers have to work in the store showrooms, warehouses or restaurants for at least one week a year.
A: So, that really makes SilverMark InC.Design & Build a fascinating place to work for.
You will hear two people talking about corporate culture of company.
Name of programme: (5)______
Eric Finucane works as (6)______ in the company.
The company organizes (7)______ in the company
All the managers have to work (8)______ a year in warehouses or restaurants.
单项选择题
已定义基类A和派生类B: class A{ptivate: int x;protected: int y;public: int z;void ShowA( ) { cout << x << y << z B、y = 5;
C、z = 5;
D、ShowA( );
未知题型
基础设施投资活动可以按照“贷款修路，收费还贷”的模式进行。北京五环路项目就是采取这种模式建设。它的投资人首发公司向银行借贷116.3亿元，并享受30年的道路经营权。首发公司当初预计30年后不仅可以收回投资，而且还有较大的盈余，但实际收费情况与预计相去甚远。2003年五环路通车后，更多人真切的感受到五环路收费的压力。人们宁愿挤在三.四环上，也不愿意付费走五环。根据首发公司的统计，按照当时的收费情形，需要200年才能还清贷款。无奈之下，五环路很快停止收费，现在100多亿元的建设资金回收毫无着落，这意味着政府财政将承担这笔巨额开支。
根据以上材料，分析：
(1)北京五环路基础设施建设项目属于什么形式的投资?
(2)请结合这一失败的基础设施私人投资方式，分析政府应该怎样补偿和扶持私人部门进行基础设施投资活动?
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