皮皮学，免费搜题
登录
搜题
【简答题】
海水综合利用的工艺流程图如下： （l）电解NaCl溶液，在电解槽中可直接得到的产品有H 2 、 或H 2 、 。 （2）步骤I中已获得Br 2 ，步骤II中又将Br 2 还原为Br - ，其目的是 。 （3）步骤II用SO 2 水溶液吸收Br 2 ，吸收率可达95%，有关反应的离子方程式为 ，反应可知，除环境保护外，在工业生产中应解决的主要问题是 。 （4）分离出粗盐后的海水中蕴含着丰富的镁资源，经转化后可获得MgCl 2 粗产品。从海水中提取镁的步骤为： a．将海边大量存在的贝壳锻烧成石灰，并将石灰制成石灰乳； b．将石灰乳加人海水沉淀池中经过滤得到Mg(OH) 2 沉淀； c．在Mg(OH) 2 沉淀中加人盐酸得到MgCl 2 溶液，再经蒸发结品得到MgCl 2 · 6H 2 O; d．将MgCl 2 ·6H 2 O在一定条件下加热得到无水MgCl 2 ．电解熔融的氯化镁可得到Mg。 ①步骤d中的“一定条件”指的是 ，目的是 ; ②有同学认为：步骤b后可加热Mg(OH) 2 得到MgO，再电解熔融的MgO制金属镁，这样可简化生产步骤，体现简约性原则：你是否同意该同学的想法并说明理由： 。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】—_______________________________ —We have three major divisions Operations, Sales and Marketing, Finance and Administration.
A.
How many departments do we have?
B.
Which division are you in?
C.
Which department shows the best?
查看完整题目与答案
【简答题】Interpreting has three major forms: Alternating interpretation,Consecutive interpretation and Simultaneous interpretation. List a form on their major differences.
查看完整题目与答案
【判断题】break语句也可以用于if体内,它可退出if语句。
A.
正确
B.
错误
查看完整题目与答案
【单选题】large majority of agreements in distributive bargaining are reached when the deadline is ___________.
A.
A near
B.
flexible
C.
past
D.
undefined
查看完整题目与答案
【单选题】As vascular plants, trees are organized into three major organs: the roots, the stems, and the leaves.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【简答题】______ as the 'covert depression', it has three major symptoms.
查看完整题目与答案
【单选题】Language，______________， and culture are three major strands highly reflected in the linguistic relativity, and they are also reflected in Applied Linguistics.
A.
music
B.
thought
C.
dance
D.
paint
查看完整题目与答案
【单选题】There are ______ major periods in the drama of the West.
A.
Four
B.
Five
C.
Six
D.
Three
查看完整题目与答案
【多选题】同一个工序的加工是指（）的加工。
A.
同一个机床
B.
同一批工件
C.
同一把刀
D.
一次进刀
E.
工件某些表面的连续加工
查看完整题目与答案
【单选题】Nigeria, a major West African country, is nearly Great Britain. [     ]
A.
three times the size as
B.
three times the size of
C.
three times as the size
D.
the size three times of
查看完整题目与答案
相关题目：
【单选题】—_______________________________ —We have three major divisions Operations, Sales and Marketing, Finance and Administration.
A.
How many departments do we have?
B.
Which division are you in?
C.
Which department shows the best?
查看完整题目与答案
【简答题】Interpreting has three major forms: Alternating interpretation,Consecutive interpretation and Simultaneous interpretation. List a form on their major differences.
查看完整题目与答案
【判断题】break语句也可以用于if体内,它可退出if语句。
A.
正确
B.
错误
查看完整题目与答案
【单选题】large majority of agreements in distributive bargaining are reached when the deadline is ___________.
A.
A near
B.
flexible
C.
past
D.
undefined
查看完整题目与答案
【单选题】As vascular plants, trees are organized into three major organs: the roots, the stems, and the leaves.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【简答题】______ as the 'covert depression', it has three major symptoms.
查看完整题目与答案
【单选题】Language，______________， and culture are three major strands highly reflected in the linguistic relativity, and they are also reflected in Applied Linguistics.
A.
music
B.
thought
C.
dance
D.
paint
查看完整题目与答案
【单选题】There are ______ major periods in the drama of the West.
A.
Four
B.
Five
C.
Six
D.
Three
查看完整题目与答案
【多选题】同一个工序的加工是指（）的加工。
A.
同一个机床
B.
同一批工件
C.
同一把刀
D.
一次进刀
E.
工件某些表面的连续加工
查看完整题目与答案
【单选题】Nigeria, a major West African country, is nearly Great Britain. [     ]
A.
three times the size as
B.
three times the size of
C.
three times as the size
D.
the size three times of
查看完整题目与答案