编制商业计划的意义是什么？
高次谐波还可使变压器铁损及（）损耗增加引起过热。
A manufacturing company has a large facility which has its offices at one end and a manufacturing floor at the other. The company is looking to implement new equipment that requires access to the company’s SAN that is over 2.4 kilometers away in the office area. Which of the following solutions will satisfy this requirement？（） Install a longwave GBIC in the office SAN switch and string a multimode fibre from the office to the manufacturing floor。 Install a longwave GBIC in the office SAN switch and string a singlemode fibre from the office to the manufacturing floor。 Install a shortwave GBIC in the office SAN switch and string a multimode fibre from the office to the manufacturing floor。 Install a shortwave GBIC in the office SAN switch and string a singlemode fibre from the office to the manufacturing floor。
Evaluate this SQL statement: SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which capabilities of a SELECT statement are performed?（） Selection, projection, join。 Difference, projection, join。 Selection, intersection, join。 Intersection, projection, join。 Difference, projection, product。
常温下昼夜温差不大于10℃时，水泥混凝土路面现场养护方法有（）。 湿法养护。 蒸汽养护。 围水养护。 薄膜养护。 保温养护。
An IT manager needs to deploy multiple applications simultaneously.
Which virtualization technology will reduce the number of operating system maintenance tasks？（）
