一个梯形果园的上底长65米,下底长80米,高是60米,共种了1740棵果树,平均 发布时间:2017-05-13 18:22 │ 来源:www.tikuol.com 题型:解答题 问题: 一个梯形果园的上底长65米,下底长80米,高是60米,共种了1740棵果树,平均每棵果树占地多少平方米?
题型:解答题 What can be inferred about the defence mechanisms of the sea cucumber A.They are very sensitive to surrounding stimuli.B.They are almost useless.C.They require group cooperation.D.They are similar to those of most sea creatures. 查看答案