A dirty air filter will cause your RAV4 to lose 1 - 3 mpg, depending on your driving, you can save 70 - 100 gallons of gas per year simply by changing your filter regularly. The video above, shows you where the engine air filter is located in your RAV4 and how to change it!
A flatbed scanner is a type of scanner which uses a flat, glass  surface for scanning documents. Some of its disadvantages are  scanning is done page by page, too much desk â¦ space is taken and not  suitable for film scanning tasks. 1 person found this useful.n advantage of a scanner is the ability to produce accurate and  high quality images. A disadvantage is the amount of memory the  images can use.
1 Drum scanners are used by the publishing industry to capture incredibly detailed images. 2  They use a technology called a photomultiplier tube (PMT). 3  In PMT, the document to be scanned is mounted on a glass cylinder. 4  At the center of the cylinder is a sensor that splits light bounced from the document into three beams. Flatbed scanners, also called desktop scanners, are the most versatile and commonly used scanners. 2  In fact, this article will focus on the technology as it relates to flatbed scanners. 3  Sheet-fed scanners are similar to flatbed scanners except the document is moved and the scan head is immobile.