40. For a diesel engine an initial downward stroke of the piston draws in the air to charge the cylinder, which is followed by the compression stroke, with the fuel being injected as top dead center is approached, then a downward power stroke, and an upward exhaust stroke. Which type of engine is called for this operation?
(A) Two-stroke engine
(B) Four-stroke engine
(C) Supercharging engine
(D) Ideal cycle engine

輪機工程(概要)（包括推進裝置、輔機與輪機英文）- 95 年 - 95-1 航海專技特種考試_一等管輪：輪機工程（包括推進裝置、輔機與輪機英文）#15923

答案：B
難度： 適中

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