请据图回答下列问题1图二所示的肺泡壁和毛细血管都是有一层扁平的上皮细胞上皮细胞构成这有利于气体交换气体交换2图二中a代表的物质是 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 theseChef, Wife, Fighter, Elk, Butterscotch, Pumpkin, Angelfish, Mosque, Amoebas, Eyeball, 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?

Amer Amimer
sketch #2813 Stan from South Park by Amer Amimer


anonymous
anonymous
sketch #1183


anonymous
anonymous
sketch #3659 Portrait by Mari Falcsik


anonymous
anonymous
sketch #3639


anonymous
anonymous
sketch #3071 Metallica - Kill &#;Em All by Dayana Aleman


anonymous
anonymous
sketch #2969


anonymous
anonymous
sketch #3058 Marilyn Monroe by Adam Pyszny


Rachel Roe
sketch #2643 Spring chick


Donara Smbatyan
sketch #1448 donara


anonymous
anonymous
sketch #4471 Brother Bear by Samuel Roberto


anonymous
anonymous
sketch #5313 Katy Perry by Monalisa Theresia


anonymous
anonymous
sketch #3359 &#;In love and lonely&#; by Irul Ventura


anonymous
anonymous
sketch #2431 face :D


Милен Тревата
sketch #2771 Naruto by Милен Тревата


anonymous
anonymous
sketch #3535 Mickey by Hakan Usuğ


anonymous
anonymous
sketch #5080 Megaman Zero (X) by Muhammad Raiyaan


anonymous
anonymous
sketch #3310 Link by Cxsar Alvarez


anonymous
anonymous
sketch #3083 Great illustration Ali Hänel


Amazigh N Amurwakuc
sketch #2359 imazighen amazigh flag


anonymous
anonymous
sketch #4885


anonymous
anonymous
sketch #1045


anonymous
anonymous
sketch #4682 Elvis Presley by Nassim Nouri


anonymous
anonymous
sketch #4907


anonymous
anonymous
sketch #4632


anonymous
anonymous
sketch #1519


anonymous
anonymous
sketch #3247 Thor by Juvenilia Alexandrino


sketchmaster
sketch #2620 goblin man


anonymous
anonymous
sketch #5092 Silvers Rayleigh by Wasim Khan

tomski请据图回答下列问题1图二所示的肺泡壁和毛细血管都是有一层扁平的上皮细胞上皮细胞构成这有利于气体交换气体交换2图二中a代表的物质是 coloring