闭管式循环

（14分）下图是一个化学过程的示意图。已知甲池的总反应式为： 2CH₃OH+3O₂+4KOH   2K₂CO₃+6H₂O 填写下列空白：

（1）请写出甲、乙两池的名称。甲电池是       ，乙池是       。

（2）甲池中通入CH₃OH的电极名称是       ，电极反应方程式为                       ；乙池中B（石墨）电极的名称是       。

（3）电解过程中，乙池溶液pH的变化为（“升高”、“降低”或“不变” ）        。

（4）当乙池中A（Fe）极的质量增加5.40g时，甲池中理论上消耗O_­2               mL（标准状况下）

《马丘比丘 * * 》的主要贡献是( )。

A．强调物质空间对城市发展的影响

B．强调人与人之间的相互关系

C．突出城市功能分区的重要作用

D．提出建立生态城市的思想

滚翻式货舱盖开舱时，在盖板进入舱口端收藏坡道后盖板便：（）

A.顺序纵向叠加

B.顺序横向并靠

C.自动水平堆积

D.翻转成直立状态存放

当机动车在湿滑路面上行驶时，路面附着力随着车速的增加如何变化？

A．急剧增大

B．逐渐增大

C．急剧减小

D．没有变化

B

Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.

Although there are many different types of food, some animals spend their lives eating only one type. The giant panda(大熊猫) eats only one particular type of bamboo(竹子). Other animals eat only one type of food even when given the choice. A kind of white butterfly(蝴蝶)will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet(多样化饮食). The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.

Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat food with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.

Which of the following eats only one type of food().

A. The white butterfly.

B. The small bird.

C. The bear.

D. The fox.