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简述投资风险价值的内涵。

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在考生文件夹内(C:\ylc)有一个工程文件ylc.vbp。在窗体上有一个文本框，名字为Text1，以及两个命令按钮，名字分别为Command1和Command2，标题分别为Search和Save。还有一个函数过程Search(a)，在程序中可以直接调用该函数，其功能为判断整型参数number是否为质数。如果是则返回True，否则返回False。编写一个事件过程，实现以下功能：运行时，在文本框内输入一个正整数。单击Search按钮后，找到小于该正整数的第一个素数，显示在 Text1中；单击“Save”，则把Text1中的计算结果存入考生文件夹下的out.txt文件中。程序运行后如图27所示。要求实现题目给出的功能，并将文件保存在考生文件夹下，工程文件名为 ylc.vbp。

背景：
某市轨道交通2号线穿越江底隧道的旁通道施工过程中，发生大量流沙涌入，引起隧道受损及周边地区地面沉降，造成三幢建筑物严重倾斜及部分防汛墙沉陷，造成直接经济损失1.4亿元。因事故处理及时，未造成人员伤亡。该工程建设单位为某市地铁建设有限公司，施工总承包单位为某市隧道工程股份有限公司(以下简称隧道公司)；隧道公司将该部分工程中的隧道中间风井、旋喷加固、旁通道、垂直通道、冻结加固及风道结构专业工程分包给某矿山工程公司。
经调查，造成事故的原因是分包商某矿山工程公司指定的“冻结法施工方案调整”存在缺陷，施工过程中在旁通道冻结条件不太充分的情况下，进行开挖；分包项目存在漏洞，总包单位也未就施工方案向分包公司做说明，隧道公司质量安全员一次也没有去施工作业面进行技术、质量的检查。
问题：
(1)承包商的主要负责人对承包商安全生产的主要职责是什么？
(2)承包商的项目负责人对施工项目安全生产的主要职责是什么？
(3)总承包商和分承包商之间的安全生产职责关系如何？该工程项目的安全事故由谁承担主要责任？
(4)本案事故的发生和施工的特殊性是有着密切关系的，对于这些特殊工程，为了保证安全需要，根据《建设工程安全生产管理条例》规定，应当有哪些特殊要求？承包商应当对哪些分部分项工程编制专项施工方案？
(5)总承包单位项目经理部进行安全技术交底时，必须要做到哪些要求？安全交底的内容包括哪些？

简述多媒体广告的大致范围。

听力原文：M: Gold Express. Jim Davenport.
W: Morning. This is Anna Marsh from Business Review. You said you'd give me some information for the article I'm doing on delivery companies.
M: Ah, yes.
W: So, when did “Gold Express” start doing business？
M: Well, it had been in business for 10 years when I joined it in 1986, so that means it was set up in 1976.
W: I see. And what's your annual turnover？
M: ￡118 million last year—that's ￡12 million more than the year before.
W: That's fantastic.
M: Most similar companies have only grown by 8 to 9 percent in the last 5 years, but our business has grown by 54 percent in that time. I think that's due to our MD, Peter Mackintosh.
That's spelled M-A-C-K-I-N-T-O-S-H. He's done a great job.
W: What ideas has he brought to the company？
M: Well, first a very positive attitude to customer opinion. We have 120,000 customers, and we send questionnaires to 4,000 of those every 8 weeks.
W: That must be very useful for you.
M: And we encourage all our staff—there are 7,500 now, because we've taken on another 450 this year-to give opinions too.
Last month 76 percent of staff said they were “totally satisfied” with their work here—that's 10percent more than last time!
W： That's great, thanks.
&8226;Look at the notes below.
&8226;Some information is missing.
&8226;You will hear an interview between Anna Marsh, who works for a business magazine, and Jim Davenport, who works in the publicity department of a company, Gold Express.
&8226;For each question (9-15), fill in the missing information in the numbered space using a word, numbers, or letters.
&8226;After you have listened once, replay the recording.
Interview notes
Company: GOLD EXPRESS
Started in: (9)
Most recent turnover: (10)
Growth over 5 years: (11) %
Managing Director: Peter (12)
Total number of customers: (13)
Number of employees: (14)
Recent staff questionnaire showed: (15) __ % enjoyed their work.
(9)