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.
Why PET scans are used. An advantage of a PET scan is that it can show how well certain parts of your body are working, rather that showing what it looks like. They're particularly helpful for investigating confirmed cases of cancer, to determine how far the cancer has spread and how well it's responding to treatment.ntroduction. Positron emission tomography (PET) scans are used to produce detailed three-dimensional images of the inside of the body. The images can clearly show the part of the body being investigated, including any abnormal areas, and can highlight how well certain functions of the body are working.