问题 完形填空

Farming in the USA today is very different from that 100 years ago. In those days, farmers did not

have many machines to help them. They had animals. 小题1:    __  This meant that farms were smaller

than they are now. Farmers also worked in a different way in the past. In those days, farmers grew fruits

and vegetables and kept cows, pigs and chickens to feed their families. 小题2:_______

Farmers have a very special life in many ways. First of all, they can't leave the job at the end of

the day. They live on the farm and there is always work to do. Second, a lot of farm work is outdoors,

so the weather is very important for farmers. 小题3:_________   A lot of bad weather means farmers will

lose money. Finally, farmers work with plants and animals. They understand nature better than other

people do .

小题4:_______ Spring is a time for planting. Farmers are busy getting the fields ready and then: Planting the seeds(种子). In summer, farmers must take good care of the plants. Some may need water. Other plants may have problems with insects or diseases. Then in fall, the fruits or plants are ready for picking. 小题5:_______ Winter is a time for rest or for work on the farm machines.

把A---E五个选项填入文中空缺处,使短文完整正确。

答案

小题1:C

小题2:E

小题3:D

小题4:A

小题5:B

主旨大意:这篇短文主要从过去和现在以及农业与季节的关系讲述了农业的发展变化.

小题1:联系前一句,他们用动物.及后一句,这意味着农民们比他们现在弱小.故选C,但是动物们工作起来比机器慢得多.

小题2:联系前一句In those days,在那些日子里,可知本句讲述现在的事情,故选E,如今,人们在农场上种植作为,因此他们可以销售他们.

小题3:联系后一句.太多的不好的天气意味着农民们会损失很多钱.故选D,这对于他们农场的成功页很重要.

小题4:联系后一句,春天是一个种植的季节.故选A,农活随着季节变化.

小题5:联系前一句,然后在秋天,水果或者农作物都该采摘了.故选B.

问答题 案例分析题

某公司在某工业园新建两套8m2的竖炉球团项目,年产球团矿80万t。根据当地环保部门批复,项目SO2总量为540t。竖炉球团项目生产工艺为:含铁料、膨润土按一定的配比进入烘干混匀筒烘干。烘干混匀后的混合料由φ6m圆盘给料机、给料皮带机直接向φ6m造球圆盘供料。造好的小球通过接料板落入S-1皮带机,然后进入双层圆辊筛筛分。上层为大球筛,筛上≥18mm粒级的生球,经胶带机,被送到大球破碎机破碎后进入返料系统;筛下<18mm粒级的生球进入下层筛继续筛分,筛出≤5mm粒级的生球进入返矿系统,筛上合格生球(大于5mm小于18mm)直接落入S-2胶带机上,合格的生球通过设有电子秤的皮带机转运至梭式布料机,梭式布料机再向竖炉均匀布料。合格生球在炉顶布料后进入炉体,经过干燥、预热、焙烧、均热、冷却等,再通过液压传动的齿辊卸料机、振动给料机排出炉体。竖炉烟气、竖炉排料口(链扳机头部)、成品筛分、竖炉直料管与振动给料器产生的废气(200000m3/h)经电除尘器净化后进入玻璃钢旋流板塔脱硫后由60m烟囱外排。球团返矿、电除尘器收尘送入某选厂进行选矿生产铁精矿。项目吨产品铁精砂耗量为1050kg,能源为天然气。铁精砂化学成分见表1。成品球团主要成分所占的比例:TFe≥62%、FeO≤1.0%、S≤0.045%,碱度R=0.44。竖炉球团生产为连续工作制度,四班三运转,每天三班,每班工作8h,作业天数330d。

污水水质复杂程度如何?污水监控方法是否合理?

问答题 简答题