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 Service is more selective than Harvard University. If you make it into the Foreign Service, the next stop is the Department of Stateâs National Foreign Affairs Training Center for A-100, a ten-week introduction to the Department of State and work as a Foreign Service Officer.f your job is promoting international trade, for example, youâll need to learn about a countryâs economy, business practices, and banking system. Youâll also need to learn the etiquette and customs of your host country and be polite, tactful, and patient.