问题
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33.1, 88.1, 47.1,() A. 29.3;B. 34.5;C. 16.1;D. 2
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1,1/2 , 6/11 ,17/29 , 23/38 ,()A.28/45 B.117/191 C.31/47 D.122/199
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:33.1,88.1,47.1,() A.29.3B.34.5C.16.1D.28.9
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33.1,88.1,47.1,() A.29.3B.34.5C.16.1 D.28.9
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1/6,2/3,3/2,8/3,25/6,() A.3B.6C.29/3D.42/6
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经济混合气的过量空气系数为()。A、0.88B、1.13~1.33C、0.43~0.87D、1.11