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【化学与技术】 下图是某企业设计的硫酸—磷肥—水泥联产、海水—淡水多用、盐—热—电联产的三大生态产业链流程图。 根据上述产业流程回答下列问题： （1）该流程①、②、③、④、⑤为能量或物质的输送，请分别写出输送的主要物质的化学式或能量形式：① 、② 、③ 、④ 、⑤ 。 （2）沸腾炉发生反应的化学方程式 。磷肥厂的主要产品是普钙（磷酸二氢钙和硫酸钙），写出由磷矿石和硫酸反应制普钙得化学方程式 。 （3）用1吨硫铁矿（FeS 2 的质量分数为36％）接触法制硫酸，制硫酸的产率为65％，则最后能生产出质量分数为98％的硫酸 吨。 （4）热电厂的冷却水是 ，该流程中浓缩盐水除提取盐以外还可提取的物质有 （写出一种即可）。 （5）根据现代化工厂设计理念请提出高炉炼铁厂废气、废渣及多余热能的利用设想。 ， （写出两点即可）。
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【多选题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
A.
Natural gas differs from other fossil fuels in that it is not found in underground deposits.
B.
Natural gas is extracted from both associated and non-associated sources, and there are many different varieties.
C.
Some deposits of natural gas contain high concentrations of impurities such as sulfur and cannot be used commercially.
D.
Because it burns cleaner than coal and oil, natural gas is much less damaging for the environment.
E.
One of the main drawbacks in the use of natural gas is that it cannot be piped across oceans.
F.
Natural gas is an appealing alternative to other fossil fuels because it is cheaper, more easily transported, and more abundant.
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【单选题】— I have tried very hard to find a solution to the problem, but in vain. — Why not consult with Frank? You see, ______ [     ]
A.
great minds think alike
B.
two heads are better than one
C.
a bird in the hand is worth two in the bush
D.
it's better to think twice before doing something
查看完整题目与答案
【多选题】人的成熟的红细胞的形态结构正确的是( )
A.
双凹圆盘状
B.
无细胞核
C.
胞质充满血红蛋白
D.
细胞器较少
E.
直径约7.5μm
查看完整题目与答案
【单选题】一个好的任务或者制度应具备()
A.
负责人纵容下属懒散
B.
反复制定制度或修改制度
C.
执行过程过于死板
D.
制度的制定和更新必须遵循相应程序
查看完整题目与答案
【单选题】Only by making wise use of land______ to find a solution to the problem of hunger and famine.
A.
we can be
B.
we will be able
C.
will we be able
D.
can we
查看完整题目与答案
【简答题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
查看完整题目与答案
【简答题】下列关于细胞结构和功能的叙述正确的是( ) A. 由纤维素组成的植物细胞骨架与细胞形态的维持有关 B. 液泡主要存在于植物细胞中,其内含有各种营养物质和各种色素 C. 若把人的成熟红细胞离体培养在无氧环境中,将会影响红细胞对离子的吸收 D. 溶酶体和高尔基体在行使功能时,可能伴随膜组分的更新
查看完整题目与答案
【单选题】下列关于人体细胞的形态结构和功能的叙述,不正确的是( )
A.
胰腺细胞:发达的内质网和高尔基体,与分泌功能有关
B.
小肠绒毛上皮细胞:细胞膜向肠腔突起,增加吸收面积
C.
成熟红细胞:没有细胞核,为运输氧气提供更多的空间
D.
卵细胞:体积大,有利于细胞与环境进行物质交换
查看完整题目与答案
【单选题】制作千层饼时,把下好的剂子擀成一头宽、一头窄的长片,抹上油,撒上花椒粉和精盐,从窄的一头卷起用宽的一头将两个边包上,再做成 ( )的生坯。
A.
半圆形
B.
方形
C.
长方形
D.
圆形
查看完整题目与答案
【简答题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
查看完整题目与答案
相关题目：
【多选题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
A.
Natural gas differs from other fossil fuels in that it is not found in underground deposits.
B.
Natural gas is extracted from both associated and non-associated sources, and there are many different varieties.
C.
Some deposits of natural gas contain high concentrations of impurities such as sulfur and cannot be used commercially.
D.
Because it burns cleaner than coal and oil, natural gas is much less damaging for the environment.
E.
One of the main drawbacks in the use of natural gas is that it cannot be piped across oceans.
F.
Natural gas is an appealing alternative to other fossil fuels because it is cheaper, more easily transported, and more abundant.
查看完整题目与答案
【单选题】— I have tried very hard to find a solution to the problem, but in vain. — Why not consult with Frank? You see, ______ [     ]
A.
great minds think alike
B.
two heads are better than one
C.
a bird in the hand is worth two in the bush
D.
it's better to think twice before doing something
查看完整题目与答案
【多选题】人的成熟的红细胞的形态结构正确的是( )
A.
双凹圆盘状
B.
无细胞核
C.
胞质充满血红蛋白
D.
细胞器较少
E.
直径约7.5μm
查看完整题目与答案
【单选题】一个好的任务或者制度应具备()
A.
负责人纵容下属懒散
B.
反复制定制度或修改制度
C.
执行过程过于死板
D.
制度的制定和更新必须遵循相应程序
查看完整题目与答案
【单选题】Only by making wise use of land______ to find a solution to the problem of hunger and famine.
A.
we can be
B.
we will be able
C.
will we be able
D.
can we
查看完整题目与答案
【简答题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
查看完整题目与答案
【简答题】下列关于细胞结构和功能的叙述正确的是( ) A. 由纤维素组成的植物细胞骨架与细胞形态的维持有关 B. 液泡主要存在于植物细胞中,其内含有各种营养物质和各种色素 C. 若把人的成熟红细胞离体培养在无氧环境中,将会影响红细胞对离子的吸收 D. 溶酶体和高尔基体在行使功能时,可能伴随膜组分的更新
查看完整题目与答案
【单选题】下列关于人体细胞的形态结构和功能的叙述,不正确的是( )
A.
胰腺细胞:发达的内质网和高尔基体,与分泌功能有关
B.
小肠绒毛上皮细胞:细胞膜向肠腔突起,增加吸收面积
C.
成熟红细胞:没有细胞核,为运输氧气提供更多的空间
D.
卵细胞:体积大,有利于细胞与环境进行物质交换
查看完整题目与答案
【单选题】制作千层饼时,把下好的剂子擀成一头宽、一头窄的长片,抹上油,撒上花椒粉和精盐,从窄的一头卷起用宽的一头将两个边包上,再做成 ( )的生坯。
A.
半圆形
B.
方形
C.
长方形
D.
圆形
查看完整题目与答案
【简答题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sen...
查看完整题目与答案
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