下图是氢氧化钙的溶解度曲线图。现有60 ℃含l00g水的澄清氢氧化钙饱和溶液(容

题型:选择题

问题:

下图是氢氧化钙的溶解度曲线图。现有60 ℃含l00g水的澄清氢氧化钙饱和溶液(容器底部无固体)降温到10℃.下列说法正确的是

A.溶液中有固体析出

B.溶液变为不饱和

C.溶液仍饱和

D.溶质质量分数变小

考点:固体溶解度气体溶解度
题型:选择题
During the Spring Festival, people often prefer to try new things and to enjoy themselves a lot after one year’s hard work, but it has increased some unnecessary consumptions (消费) .
The “clear your plate” campaign (活动) started before the New Year, and runs through the two festivals. People began to think about their consumption patterns (模式), “to clear your plate” has become a more and more welcome “New Year Style”.
Reporters have learned from many restaurants in Lhasa city that during the New Year. Customers pay more attention to family get-together, and a lot of families will ask them to pack leftovers (剩菜) home after meals.
According to Mr. Zhou, a canteen manager at Central South University, said that students produce over 12 barrels (桶) of leftovers every day — each barrel stands at one meter in height. According to Xinhua News Agency, the food wasted by Chinese people equates to (相当于) about 50 million tons of grain every year, or 10 percent of the country’s total annual grain production.
Come on, dear friends. Let’s start with ourselves. Let’s stop throwing away food.
Information Card
The more and more welcome  “New Year Style” is
小题1:________.
The way that people deal with the leftovers after meals in restaurants is to
小题2:   after meals.
How many leftovers do the students in Central South University produce every day?
小题3:               .
The food wasted by Chinese people equates to about
小题4:          every year.
For the campaign, we can start with ourselves and
小题5:                 .
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压力调节阀的主要结构形式有().

A.直接作用式

B.间接作用式

C.气动薄膜式和自力式

D.直接作用式、间接作用式、气动薄膜式和自力式

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敏捷制造的概念及其范畴、体系层次?

题型:选择题

卷烟零售客户投诉源于服务,如()。

A、各类工作人员的服务类容、服务特点、服务方式、服务技巧等引发客户不满

B、各类工作人员的服务类容、服务态度、服务反应速度、服务技巧等引发客户不满

C、各类工作人员的服务质量、服务态度、服务反应速度、服务类容等引发客户不满

D、各类工作人员的服务质量、服务态度、服务方式、服务技巧等引发客户不满

题型:选择题

与照片密度不相关的是

A.显影温度

B.显影时间

C.显影液特性

D.显影液疲劳度

E.显影槽的深度

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