如图是家鸽的肺和气囊示意图请据图回答1从图中可以看出气囊与肺相通鸟类飞行时每�吸一次空气就 次经过 .在 内进行两次气体 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com






Try and sketch some of theseMosque, Restaurant, Hydrant, Hikers, Squirrel, Trapdoor, Volcano, Iron, Cannery, Sock hop, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #1519


anonymous
anonymous
sketch #5059 Edward Hopper&#;s &#;Nighthawks&#; by Rosanne Zammit


anonymous
anonymous
sketch #1138


anonymous
anonymous
sketch #3258


anonymous
anonymous
sketch #3165


anonymous
anonymous
sketch #933 mts


anonymous
anonymous
sketch #3378


anonymous
anonymous
sketch #1923 12


anonymous
anonymous
sketch #5216 D by Gabriela Segura


Gabriela Segura
sketch #2740 Monster by Gabriela Segura


anonymous
anonymous
sketch #2922


anonymous
anonymous
sketch #5287


anonymous
anonymous
sketch #2393


anonymous
anonymous
sketch #22


anonymous
anonymous
sketch #286 sun


anonymous
anonymous
sketch #4370 Breaking Bad


anonymous
anonymous
sketch #3064


anonymous
anonymous
sketch #4724 Turtwig by Mark Robson


anonymous
anonymous
sketch #3259


Rachel Roe
sketch #2645 Flowers in window


anonymous
anonymous
sketch #1490 James Joyce....


anonymous
anonymous
sketch #4279 Winnie the Pooh by Douglas Dalmora


anonymous
anonymous
sketch #3732 Michael Jackson by David Obando


anonymous
anonymous
sketch #4661 Woodpecker by Hsien-Ying Hsieh


anonymous
anonymous
sketch #3774 Marilyn Manson by Junior Silva


anonymous
anonymous
sketch #3244 Winnie the Pooh by Ashok Kumar Chaturvedi

tomski如图是家鸽的肺和气囊示意图请据图回答1从图中可以看出气囊与肺相通鸟类飞行时每�吸一次空气就 次经过 .在 coloring