一家酱品厂的车间里,生产原料黄豆饼上爬满蟑螂。一位年迈的老人指点人用无毒杀蟑剂在全车间喷洒一遍,半小时后,工人们将死蟑螂收集起来一称,足有10公斤……某啤酒厂因受蟑螂侵害,啤酒质量不合格。也是这位年逾古稀的老人受聘前往指导灭蟑。经过全面喷 A sauce factory in the workshop, the production of raw soybean cake covered with cockroaches. An elderly man pointed point using non-toxic cockroach spray in the whole workshop again, half an hour later, the workers will be dead cockroaches collected said a full 10 kg ... a brewery due to cockroaches infringement, beer quality is not qualified. It is also the elderly over seventy years employed to guide cockroaches. After a comprehensive spray