combustion engines are gasoline (or petrol), diesel, and kerosene. Many people claimed the invention of the internal combustion engine in the 1860's, but only one has the patent on the four stroke operating sequence. In 1867, Nikolaus August Otto, a German engineer, developed the four-stroke Otto cycle, which is widely used in transportation even today. Otto developed the four-stroke internal combustion engine when he was 34 years old.
Arc system. The Arc system stands for Anoxic Respiratory Control system. It is an example of a two-component system, in that it has a sensor molecule and a response regulator. The Regulation of Various Genes
A cloud engineer is an IT professional responsible for any technological duties associated with cloud computing, including design, planning, management, maintenance and support. A bulletin board system (BBS) is a computer or an application dedicated to the sharing or exchange of messages or other files on a network. Originally an electronic version of the type of bulletin board found on the wall in many kitchens and work places, the BBS was used to post simple messages between users.