某汽车货运公司是当地一家具有合法经营资格并持有经营公路货物运输营业执照的现代运输企业，2007年统计资料如下：平均车辆数80辆，平均吨位5吨，工作车日23360车日，平均车日行程200公里，载运行程280.32万公里，完成货物周转量1261.44万吨公里。该公司为了占领激烈竞争的货物运输市场，决定实行合同运输战略，2008年与某生产企业签定了包括提供运输劳务的数量、质量以及运价等内容的煤炭货物运输合同，全年合同运输任务为25万吨，平均运距为60公里。根据上述资料，回答下列问题：

该公司与生产企业签定的运输合同的标的是()。

A．运送货物所提供的运输行为

B．被运送货物的距离

C．被运送货物的速度

D．被运送货物的时间

E．被运送货物的质量

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an （71） from a friend who asks you to open it. This is what happens with Melissa and several other similar email （72） . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages （73） .As administrators seek to block dangerous email attachments through the recognition of well-known （74） , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the （75） access to your network.

A．memory

B．caches

C．ports

D．registers