問題詳情

33.When the exhaust ports or valves are opened, the begin to exhaust.
(A)carbon and water
(B)refrigeration steam
(C)burnt gases
(D)oil sludge

參考答案

答案:C
難度:適中0.592593
統計:A(2),B(6),C(16),D(3),E(0)

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