【空調版】毎日一問20171212
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熱溶接における管端の隙間は、一般的に（ ）を超えません。 A. 0.3mm B. 0.5mm C. 0.7mm D. 0.8mm 正解：B
熱溶接における管端の隙間は、一般的に（B）を超えません。
A. 0.3mm B. 0.5mm C. 0.7mm D. 0.8mm
A. 0.3mm B. 0.5mm C. 0.7mm D. 0.8mm
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