The answer is B , Hope this helps , I don’t speak Spanish but a little bit I understand , I’m sure that’s the correct answer answer
The answer is B. A only. The optimum valve timing is found through experimentation using an engine dynamometer. The timing of the opening and closing of the valves is called valve timing. So the use of dynamometer measures the power output of a machine that is why it can measure the optimum valve timing.
Answer:
they can be removed safely if they're immersed in water first.
Explanation:
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