一种装牛奶的机器，装一瓶牛奶要用2秒钟，加上盖子和贴标签各要用1秒钟，1分钟可装多少瓶牛奶？(w/E-k6E*g2h9P(A
算式：提示:s2p/T3H4}1s5k(w/E-k6E*g2h9P(A
答： 1分钟可装8{1K*O4o1`0O*D0M;`0H;x瓶牛奶。(w/E-k6E*g2h9P(A