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        rg2024-09-19 06:10:12 ҪͶ
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        B.Û

        C.

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        2:⹤̈DĈD˃Ҫݑеgĵ

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        3: ijʡA㶨~ҎA䓽ιLȳ^20וr~rϵ1.2ɶ~֪ȫL30ԃȕrA䓽Ļr274.8Ԫ/m3tijA䓽҆ιL^20ȫL30ԃtĿ򘶵Ļr

        A.274.8Ԫ/m3

        B.329.76Ԫ/m3

        C.844.93Ԫ/m3

        D.229Ԫ/m3

        4:uY䓽ĸ߶ͨȵ()

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        17:̼ؽY䓵̖αʾ?ʲôQ235̖䓱Vڽ?ԇ^Q235-AFQ235-BbQ235-CQ235-Dܺ͑ʲô^e?

        18:ڹ}ˮГӻԻϲϵҪá

        19:rֵeķЩ?

        20:A㶨~

        21:ӋϱȞ12.134.31ˮұȞ0.58ԇ{r10%ˮ{ԇ(1)ԓĻϱ;(2)֪ԻϱƵĻÿm3ˮ320kg1m3ϵ

        22:A㶨~Ҫʲô?

        23:ҪشA㶨~ľԭt

        24:û؏zyȕrijy^16yc؏ֵ35363833373540323435363834353736ՈӋԓy^ƽ؏ֵ

        25:ʷһ㲽E


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