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【Daily Question】Utilities - Mechanical & Electrical - 20191121

2019-11-21View Original

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The concrete used for the secondary pouring of the machine foundation generally needs to have a strength grade one higher than that of the foundation’s concrete. When the thickness of the secondary pour is less than 50 mm, ( ) is used.    A. 1:2 cement mortar B. 1:1 cement mortar C. fine aggregate concrete D. reinforced concrete Answer: A

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