2016-11-16 選択問題（参加賞3点、正解賞8点）
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化学工業企業における圧力容器の圧力放出用安全装置には、安全弁と（）などがある。 A、排水弁 B、逆止弁 C、防爆膜 D、流量制御弁 D
化学工業企業における圧力容器の圧力放出用安全装置には、安全弁と（C、防爆膜）などがある。
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