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複数選択問題(参加賞3点、正解賞8点)

2016-10-21View Original

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触媒の反硫化の原因と対処法 ( ) A層の温度が長期にわたって過熱状態にある。 低い温度範囲でのBの水蒸気比が過度に高くならないように制御する。 水分比を適切に管理し、Cガスの硫化水素含有量が過低にならないようにする。 ガス中の硫化水素含有量を高める ABC
Reply #22016-10-21
ABC ~~~~~~~~~

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