The term “internal combustion piston engine” referS to engines in which air and gasoline are buRNT inside the metal cylinders and which drive rotating crankshaft by means of piston and connecting rods. Since a great deal of heat IS produced when the gasoline mixture burns or explodes, some means must be provided to CARRY away the excessive heat. According to the cooling system employed the piston engines may BE CLASSIFIED as air-cooled engines and liquid-cooled ones.
Being a parent is very probably the most difficult and demanding job people over do. it can also quite a disappointing time for some parents especially if they expressed parenthood to be enjoyable all the time, or had unrealistic ideas about having the perfect child. But for more parents it is one of the happiest and most satisfying experiences of thie lives. There are some problems that can make being a parent even more difficult- such as lack of money, cramped housing conditions, problems in your relationship.The most important thing to remember is that there is no one correct way of bringing up a child. Provided thier need are met , children from all different kinds of social, religoous or cultural backgrounds can still grow up to be happy, well- adjusted adults. You are the only experts when it comes to bringing up your children
