1-9/1等于多少
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眼下正值蓝须蜂虎鸟的繁殖期。近日，在云南省普洱市江城县国庆乡和平村境内，摄影爱好者刀元国通过长时间蹲守，首次拍摄记录到了蓝须蜂虎筑巢育雏珍贵影像。
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在一片茂密山林的一个土坡坎上，两只成鸟轮流外出觅食，找到食物以后会回到洞穴附近停留观察一会，确认无危险后再飞到洞穴，挂在洞口处哺育幼鸟，然后再继续觅食。幼鸟则会在洞口等待父母，不时发出叽叽喳喳的叫唤声。
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蓝须蜂虎，又称蓝须夜蜂虎、夜蜂虎等，为不常见留鸟，体长约30厘米，食物全为飞虫，以蜂类为多，常分布在茂密的森林和阔叶林中，属国家二级保护鸟类。此次拍摄到的蓝须蜂虎哺育幼鸟的画面，也是江城县首次发现记录到该鸟类。
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据了解蜂虎鸟奉行“一夫一妻制”，求偶交配成功后，夫妻共同挖洞筑巢，幼鸟孵化后，又一起捕虫喂食，因此很多地方把它们作为爱情忠贞的象征，称其为“爱情鸟”。
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江城县属亚热带湿润气候，自然环境优美、生态资源丰富，也是各类野生动植物优质的栖息环境。这次蓝须蜂虎的首次记录发现，说明当地多年生态保护成效明显。为此，相关部门还特意加大了宣传巡查力度。
\n（总台记者 李劲松 ）
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蒋例褚4349一9十(一11)等于多少 -
万贤祝15345949665 ______ -9+(-11)=-20 回答完毕~ 有疑问请追问~无疑问请点击【采纳】~ 祝学习进步\(^o^)/~~~
蒋例褚43499一1X9等于多少 -
万贤祝15345949665 ______ 9-1x9=9-9=0
蒋例褚4349一1一(6一9)一(1一13)等于多少 -
万贤祝15345949665 ______ 解:-1-(6-9)-(1-13)=-1-(-3)-(-12)=-1+3+12=2+12=14
蒋例褚43491 - 5分之2 - 9分之1等于多少要完整的过程 -
万贤祝15345949665 ______ 解此题 1-2/5-1/9=1-(18+5)/45=22/45=0.488888.....≈0.5 .1-5分之2-9分之1约等于0.5 .
蒋例褚43492/9 1/3.等于多少? -
万贤祝15345949665 ______ 2/9+1/3=2/9+3/9=5/9 2/9-1/3=2/9-3/9=-1/9 2/9x1/3=2/27 2/9÷1/3=2/9x3=2/3 ......
蒋例褚4349(3一9)一(4一8)等于多少 -
万贤祝15345949665 ______ (3一9)一(4一8)=(-6)-(-4)=-2 或者(3一9)一(4一8)=3-9-4+8=-9-4+3+8=-13+11=-2
蒋例褚434980一9略等于多少? -
万贤祝15345949665 ______ 80-9=71约等于70
蒋例褚43498/9一11/25等于多少? -
万贤祝15345949665 ______ 8/9一11/25等于 101/225 或 负88分之101(-88/101) 8/9一11/25 =200/225-99/225 =101/225 8/9一11/25 =88/99-88/200 =-88/101 希望能帮到你!
蒋例褚43494/3+18/11 - 9/1=几分之几 -
万贤祝15345949665 ______[答案] 4/3+18/11-9/1= (44+54- 297) /33 = - 199/33
蒋例褚4349|1/3 - 1/2|+|1/4 - 1/3|+|1/5 - 1/4|+…+|1/10 - 1/9| 等于多少啊?谢谢! -
万贤祝15345949665 ______[答案] |1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/10-1/9| =1/2-1/3+1/3-1/4+1/4-……+1/9-1/10 =1/2-1/10 =2/5