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【毎日一問】汚水知識-10-23(回答+3、正解+5)

2015-10-22View Original

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単一選択問題:集水井の中の格子は、一般的に( )が使用される。 A. グリッド B. 細グリッド C. 粗グリッド D. 粗半分、細半分のグリッド
Reply #22015-10-22
D、-------------------------------------------
Reply #32015-10-22
集水井の格子は一般的に( )が使用される。 C. 粗格子
Reply #42015-10-22
集水井の格子には一般的に(C)が使用される。 A. グリッド B. 細グリッド C. 粗グリッド D. 粗半分、細半分のグリッド

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