362 Which of the following is the normal color of the exhaust discharged by a petrol or gasoline engine?
(A) Black.
(B) Blue and white.
(C) It's colorless.
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統計: A(1), B(0), C(2), D(0), E(0) #2214823
統計: A(1), B(0), C(2), D(0), E(0) #2214823