解放军某部宫海涛同志给编辑部来信说:我这次 来信希望向贵社咨询两件事,我想从部队回家后搞养 殖,可又苦于没有经验。我这次来信一是参加贵社的 培训和购买一些有关图书和音像制品.二是我想咨询 一下,颗粒饲料机不同型式各有什么优缺点。诚望解 答! Comrade Gong Haitao, a PLA unit, wrote a letter to the editorial department saying: In this letter, I hope to consult with you two things. I want to engage in farming after returning home from the army and may experience inexperience with others. I am writing this letter one to participate in your training and buy some books and audio-visual products. Second, I would like to consult, pellet feed machine different types of what are the advantages and disadvantages. Sincere hope to answer!