依据《中国华电集团公司电力安全生产工作规定》,各企业依据预案管理规定,每两年对企业所有预案演练一遍。生产现场重要岗位每()年对现场处置方案全面演练一遍。
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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。
A. 正确
B. 错误
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?()
A. Use the Fax Service to start the fax service and configure the Fax service to start automatically
B. Use the Fax Service Management tool to enable the device to receive faxes
C. Use the Fax in Control Panel to reinstall the fax server and configure the fax services to receive faxes.
D. Use Fax in Control Panel to add a fax operator and run fax print device to receive faxes.
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。
A. 理论上速度无限
B. 无温升
C. 简单
D. 纯机械装置