One Question per Day on the Basic Knowledge of Compound Fertilizers and Functional Fertilizers – 51

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Multiple-choice questions on safety knowledge: 1. In work related to safe production, it is necessary to firmly establish the concept of ( ), and build economic development on a foundation guaranteed by safe production. A Safe development B Economic development C Corporate development. 2. Safety production work must adhere to the principle of ( ). A. Safety first. B. Safety first, prevention first, comprehensive management. C. Safety first, prevention first; daily quizzes on basic production knowledge are carried out in the areas for compound fertilizers and functional fertilizers. We hope that all marine enthusiasts will participate actively. The purpose of this activity is to review the knowledge we have already learned, and to improve and strengthen everyone’s fundamental theoretical knowledge through answering questions, thereby reinforcing what we already know and helping us recall what we have forgotten. The top 50 answerers will definitely receive a reward. Please reply with the answer hidden; otherwise it will be invalid. To view the hidden method, go to: http://bbs.hcbbs.com/thread-492556-1-1.html. Please do not edit after replying! 1、A 2、B