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为了删除列表框中的一个列表项，应使用的列表框方法是
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In many businesses, computers have largely replaced paperwork, because they are fast, flexible, and do not make mistakes. As one banker said, “Unlike humans, computers never have a bad day." And they are honest. Many banks advertise that their transactions are “untouched by human hands" and therefore safe from human temptation. Obviously, computers have no reason to steal money. But they also have no conscience, and the growing number of computer crimes shows they can be used to steal. Computer criminals don’t use guns. And even if they are caught, it is hard to punish them because there are no witness and often no evidence. A computer cannot remember who used it: it simply does what it is told. The head teller at a New York bank used a computer to steal more than one and a half billion dollars in just four years. No one noticed this theft (盗窃) because he moved the money from one account to another. Each time a customer he had robbed questioned the balance in his account, the teller claimed a computer error, then replaced the missing money from someone else’s account. This man was caught only because he was a gambler. When the police broke up an illegal gambling operation, his name was in the records. Some employees use the computer’s power to get revenge (报复) on their employers they consider unfair. Recently, a large insurance company fired its computer-tape librarian for reasons that involved her personal rather than her professional life. She was given thirty days notice. In those thirty days, she erased all the firm’s computerized records. Most computer criminals have been minor employees. Now police wonder if this is “the tip of the iceberg." As one official says, “I have the feeling that there is more crime out there than we are catching. What we are seeing now is all so poorly done. I wonder what the real experts are doing — the ones who know how a computer works." According to the last paragraph, what kind of criminals are the police unable to catch
“Eric nearly always wins the science award.”“That’s because his project are____.”
试述成功交往的方法和艺术。
某企业为扩大规模，拟投资约8000万元采购一批生产设备，约定招标代理服务费按照国家货物类标准下浮10%向中标人收取。招标代理过程中发生的一些收入和支出情况如表所示。收入支出情况序号收支明细金额/元1资格预审文件及招标文件印刷费用70002资格预审文件售出38份，每份20元7603招标文件售出7份，每份500元35004资格预审评审会务费80005资格评审专家劳务费120006开标评标会务费200007评标专家劳务费300008招标人对制造商进行实地考察差旅费380009技术需求编审会招标文件编写之前招标人组织需求论证2000招标文件发出之后，针对投标人的澄清要求，组织技术专家对需求进行论证和修改300010组织投标预备会会务费用200011招标公告刊登费用10000127家投标人递交投标保证金，每家20000元14000013招标期间，招标人工作人员通信费360014中标金额7800万，中标人递交招标代理服务费3321015招标代理机构工作人员的薪酬5000016招标代理机构企业费用100000 [问题] 试依据现有数据，估算本项目招标代理总收入、总成本。
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