Too much excess air is ______ because the heat generated is being lost through the exhaust

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Too much excess air is ______ because the heat generated is being lost through the exhaust trunking instead of being made used of in heating the water to produce steam.

A.not good

B.good

C.better

D.the best

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。