The camshaft. The valve train consists of the valves and a mechanism that opens and closes them. The opening and closing system is called a camshaft. The camshaft has lobes on it that move the valves up and down, as shown in Figure 5. Most modern engines have what are called overhead cams.
A Foreign Service Officer (FSO) is a commissioned member of the United States Foreign Service. As diplomats, Foreign Service Officers formulate and implement the foreign policy of the United States.
United States federal civil service. The United States federal civil service is the civilian workforce (i.e., non-elected and non-military, public sector employees) of the United States federal government's departments and agencies. The federal civil service was established in 1871 (5 U.S.C. Â§ 2101).