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毎日1問、正解しても賞品なし、楽しみが目的

2019-11-14View Original

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12.建設現場でキロールやガソリンなどが含まれた物が燃えたときは、()を使って消火しなければならない。?A、水 B、泡状消火剤 C、水と泡状消火剤 昨日の問題の答え:A 11.機械シールの動環のシール面にはある程度の端面の振れがあり、これにより(A)という現象が起こる。 A、漏れ B、軸の焼損 一昨日の問題の答え:B

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