如图为正常人体部分生理活动示意图请据图回答问题.1肺泡与血液之间的气体交换是通过 作用实现的.氧气从肺泡进入血液需要穿过 和 两层细胞 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 theseSyrup, Hopscotch, Owl, Butterscotch, Hot air balloon, Baseball diamond, Light bulb, Vampire, Gloves, Crab trap, 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?

Pascal Quéru
sketch #2479 C 'est qui ? Un rasta qui a manger trop de poulpe farcis. ? Un vieux chanteur de blue grass ? Najdica tomktoo ? A vous de me dire...


anonymous
anonymous
sketch #2144


Rachel Roe
sketch #664 Spider on a plant pot


anonymous
anonymous
sketch #5191 The View by Vicente Vera


anonymous
anonymous
sketch #3620 Dude by Arasheel Eomseii


anonymous
anonymous
sketch #2959 manga girl blue hair


anonymous
anonymous
sketch #1118 easy zombie


anonymous
anonymous
sketch #2910 Harley Quinn Germaine Hoens


anonymous
anonymous
sketch #5293


anonymous
anonymous
sketch #4766 The Little Mermaid by Zizou Aiman


anonymous
anonymous
sketch #1724


anonymous
anonymous
sketch #5156 Angry Bird by Roberto Castro Colimil


anonymous
anonymous
sketch #3321 Baby Mirella Flowers


anonymous
anonymous
sketch #1669


anonymous
anonymous
sketch #5347


anonymous
anonymous
sketch #5049


anonymous
anonymous
sketch #3749 Girl Ari Rainbow


anonymous
anonymous
sketch #4306 The burning watermelon!


anonymous
anonymous
sketch #5256


anonymous
anonymous
sketch #4362 cow


anonymous
anonymous
sketch #3439 Aralé by Malyi Link


anonymous
anonymous
sketch #5227


anonymous
anonymous
sketch #4974 Eminem by Juan Garcia


anonymous
anonymous
sketch #4972


Shuvo Islam
sketch #2770 Maggie by Shuvo Islam


anonymous
anonymous
sketch #3155 Iron Man


anonymous
anonymous
sketch #2884 Robot Shimun Yeyo Ahmed


anonymous
anonymous
sketch #3365 Igor by Johan Kennet Espinoza Moreno


anonymous
anonymous
sketch #5088

tomski如图为正常人体部分生理活动示意图请据图回答问题.1肺泡与血液之间的气体交换是通过 作用实现的.氧气从肺泡进入血液需要穿过 和 coloring