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.
Civil servants in the devolved government in Northern Ireland are not part of the Home Civil Service, but constitute the separate Northern Ireland Civil Service. Some employees of the Foreign and Commonwealth Office are members of HM Diplomatic Service, which is associated with but separate from the Civil Service.