اهمية النظافة
the importance of cleanliness
Cleanliness is the absence of dirt, including dust, stains, bad smells and clutter. Purposes of cleanliness include health, beauty, absence of offensive odor, avoidance of shame, and to avoid the spreading of dirt and contaminants to oneself and others. In the case of glass objects such as windows or windshields, the purpose can also be transparency. Washing is one way of achieving cleanliness, usually with water and often some kind of soap or detergent. In more recent times, since the germ theory of disease, it has also come to mean an absence of germs and other hazardous materials. In industry, certain processes such as those related to integrated circuit manufacturing, require conditions of exceptionally immaculate cleanliness which are achieved by working in cleanrooms.
05-22-2007, 12:52 AM
وتجنب المخالفات 
لتتجنب إيقاف عضويتك"
-
-
العرض العادي
