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매일 한 문제, 정답자에게는 6개의 부를 지급하며, 참가자에게는 2개의 부를 지급합니다;9월 24일

2016-09-24View Original

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다지선다형 문제: 중합 생산 과정에서 중합 시스템에 완화제를 첨가하여 반응기의 pH 값을 중성 범위로 유지함으로써, 분산제와 중합 시스템의 안정성을 확보하고 PVC 수지가 더 우수한 입도를 갖도록 합니다.다음 중 완충제로 적합한 것은 ( ) A, 수산화나트륨 B, 탄산수소암모늄 C, 탄산수소나트륨 D, 인산삼칼슘 답안: A B C D
Reply #22016-09-24
A. 수산화나트륨 B. 탄산수소암모늄

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