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.
This branch interprets laws. Your officeholders that make laws are part of the legislative branch, along with institutions such as the Library of Congress. If you got a job as a court secretary in a federal tax court, you would be a federal employee in the judicial branch of government. The U.S. Postal Service. The U.S. Postal Service is a quasi-federal agency; Congress sets the rules that govern its operations but it receives no tax revenue.