Technician A says that an engine that runs as cold as possible will make more power and will therefore last longer. Technician B says that the purpose of the cooling system is to let the engine run as cool as possible. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Question 2
Technician A says that when a liquid changes to a vapor, heat is absorbed. Technician B says that when a vapor changes to a liquid, heat is released. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
Overview of a computer-controlled high-pressure common rail V-8 diesel engine.
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Cold War Geography
France has produced most of its energy from nuclear power since the oil crisis of the 1970s