算法的控制结构有三种基本形式：（）、（）、（）。
什么是天然气的高热值和低热值？
Your company has more than 1，000 client computers. You deploy Windows 7 by using six different images. A driver that is included in the images needs to be replaced. You have the following requirements： Update the Windows 7 images with the new driver. Ensure that the old driver is no longer available. You need to define an image-update strategy that meets the requirements. What are two possible ways to achieve this goal？（） Mount each image by using the Deployment Image Servicing and Management （DISM） tool， and then copy the newdriver into a new folder in the image.。 Mount each image by using the Deployment Image Servicing and Management （DISM） tool， and then delete the olddriver and inject the new driver.。 Mount each image by using ImageX，and then install the new driver.。 Deploy each image to a reference computer， and then uninstall the old driver and install the new driver. Capture the new image。
A customer with IPCC Express Standard reports that a script using the Database steps is not working. What is the most likely root cause?（） The script probably has an error in the DSN configuration.。 IPCC Express Standard is not licensed for Database steps. 。 The script probably has an error in the query string. 。 There is probably an interoperability problem between IPCC Express and the database.。
固结灌浆施工的程序依次是（）。 钻孔→压水试验→灌浆→封孔→质量检查。 钻孔→灌浆→压水试验→封孔→质量检查。 钻孔→灌浆→压水试验→质量检查→封孔。 钻孔→压水试验→灌浆→质量检查→封孔。
Management has decided that the database must be available 24 hours a day， 7 days a week. Given this requirement， which type of backup is required？（）
