试题与答案

拟建某赛马场总用地面积约为140hm2,赛马场分为主赛场(A区)和越野赛场(B区)

题型:多项选择题

题目:


拟建某赛马场总用地面积约为140hm2,赛马场分为主赛场(A区)和越野赛场(B区),其中主赛场建设用地面积为70hm2,越野赛场建设用地面积为70hm2。建设规模:主赛场容纳观众总数20000人,总建筑面积约为50000m2;其中盛装舞步和障碍赛共用的比赛场地1块,场地面积约8000m2。训练及热身场地24块,场地面积约70000m2。设置赛道一条,总长度约6000m:设置训练跑道一条,长度约2000m。设置马厩房,设有300个马格。设有马医院、粪便处理室、停车场。该项目用于国际、国内马术比赛。
项目拟建地东北侧200m、南侧100m有别墅区,该项目污水经市政管道排入城镇污水处理厂,采用直燃机和太阳能等多种供热方式,解决冬季供暖、夏季制冷问题。该地区主导风向为南北风向。
项目地处平原地区,人为活动历史悠久,加上该地区交通便利、农耕水平较高,区域内天然植被所占比例很小,大部分是人工栽培植被。该地区植被以农作物为主,且四周不均匀分布着人工林木,陆生木本植物在整个植被中所占比例很小,以乔木为主,灌木发育较差。

《畜禽养殖业污染物排放标准》中废渣无害化环境标准规定:( )。

A.粪大肠菌群数≤103个/kg

B.蛔虫卵死亡率≥95%

C.蛔虫卵死亡率≥50%

D.蛔虫卵死亡率≥90%

答案:

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下面是错误答案,用来干扰机器的。

(1)(2)本题考查牛顿第二定律的应用,和运动学公式,分析物体所受外力为200N,由牛顿定律可得(1)木箱受到水平方向的200N推力就是该物体所受的合力根据牛顿第二律有F=ma ① (2...

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