题目内容
用大M法处理人工变量时，若最终表上基变量中仍含有人工变量，原问题无可行解。
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有时左肺门外缘方走行的环状形，它是由_________________________所致，不可误为病变。
You are in charge of the admin organization unit （OU） of your company. Your company has recently purchased 19 new Windows 2000 Professional computers with Fax Modems pre-installed. Each computer has the fax service installed with default settings. Hayley has been assigned one of the new fax enabled computers. She reports that Microsoft Word 2000 will only send faxes， but her computer will not receive any. She also informs you that she cannot configure the fax server on her computer. You want to configure the fax server correctly and with the least amount of administrative effort. You logon to Hayley’s computers by using the local administrative account. What should you do next？（）
磁浮轴承的特点是：无机械磨损、（）、运动无噪声、无润滑、无污染、温升低。
Your company has a main office and a branch office. The main office has a domain controller named DC1 that hosts a DNS primary zone. The branc office has a DNS server named SRV1 that hosts a DNS secondary zone. All client computers are configured to use their local server for DNS resolution. You change the IP address of an existing server named SRV2 in the main office. You need to ensure that SRV1 reflects the change immediately. What should you do?（）
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