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.
The Foreign Secretary is a member of the Cabinet, and the post is considered one of the Great Offices of State. The Foreign Secretary works out of the Foreign Office in Whitehall. The post's official residences are 1 Carlton Gardens in London and Chevening in Kent.