Задание 5:Заполните пропуски в предложениях в соответствии с содержанием текста:
1. A machine is any device that
2. A machine performs any
3. Elementary machines are
4. Every machine has
5. Many parts of a machine are
6. Ball bearings reduce friction and

The term "bearing" is derived from the verb "to bear";[1] a bearing being a machine element that allows one part to bear (i.e., to support) another. The simplest bearings are bearing surfaces, cut or formed into a part, with varying degrees of control over the form, size, roughness and location of the surface. Other bearings are separate devices installed into a machine or machine part. The most sophisticated bearings for the most demanding applications are very precise devices; their manufacture requires some