What's the difference between a timing chain and a timing belt?

Both perform the same function, they are driven by the crankshaft and drive the camshafts which control the valves and, thus, the engine's timing. A timing belt will require replacement much sooner than a timing chain. ... Timing chains last a very long time, generally the life of the vehicle

Hiv can be transmitted through oral sex. you can get hiv through vaginal fluid and semen. if you have an open sore or cut in or near your mouth and an you get the semen or vaginal fluid of an infected person in those cuts or sores, you can get hiv