阿摩線上測驗
10. Low-speed diesel engines require ________ fed into the cylinder liners to provide lubrication of the cylinder walls.
(A) cylinder oil
(B) gear oil
(C) hydraulic oil
(D) frozen oil
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統計： A(315), B(24), C(23), D(10), E(0) #3407838
統計： A(315), B(24), C(23), D(10), E(0) #3407838
