25. 液壓起貨機系統的吊上吊下動作可由下列何者來控制? (A) 變量液壓泵 (B) 單向節流閥 (C) 手動換向閥 (D) 平衡閥

39. The ignition delay associated with fuels of low ignition quality results in a late and more explosive start to the combustion period, which results in higher peak pressures and consequent rough and noisy operation. This means what？ (A) the ignition delay could increase the mean effective pressure of cycle (B) the more explosive start to the combustion period due to ignition delay could generate the higher peak pressure (C) the ignition delay associated with fuels of low ignition quality is beneficial for engine performance as it results in higher peak pressures (D) the ignition delay associated with fuels of low ignition quality could alleviate the noise generation

25. 液壓起貨機系統的吊上吊下動作可由下列何者來控制?
(A) 變量液壓泵
(B) 單向節流閥
(C) 手動換向閥
(D) 平衡閥

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