One Question per Day on the Basic Knowledge of Compound Fertilizers and Functional Fertilizers – 40 Questions

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Multiple-choice questions: 1. Which of the following factors can cause fires in electrical equipment? ( ) A. Short circuit B. Overvoltage C. Overload D. Eddy current heat. 2. Which of the following are common types of gas masks? ( ) A. Simple gas masks B. Rubber gas masks C. Two-hour oxygen respirators D. Filtered gas masks. There is a daily quiz on basic production knowledge in the category of compound fertilizers and functional fertilizers. We hope that all sea friends 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、ABCD 2、ABCD