Question 137Motor Plants - Assistant Engineer

The correct answer is A. The top deck (valve) cover of the engine shown in the illustration MO-0122 is represented by the letter 'A'. This is the correct answer based on the typical engine component labeling conventions used in the illustrations for US Coast Guard Captain's License Examinations. The other answer choices are incorrect because 'H' typically represents the fuel filter, '8' is not a standard label for any engine component, and there is a clearly labeled 'A' component that corresponds to the top deck (valve) cover of the engine in the provided illustration.