阿摩線上測驗
40. Depending on the engine condition or on the _______, the additional maintenance work orthe overhauls are necessary.
(A) time criteria
(B) temperature level
(C) piping condition
(D) seal log
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統計： A(10), B(4), C(7), D(4), E(0) #3352566
統計： A(10), B(4), C(7), D(4), E(0) #3352566
