()是指会计服务的特定单位，它为会计工作规定了空间范围A.会计主体假定 B.持续经营

氨气是重要化工产品之一。传统的工业合成氨技术的反应原理是：

N₂（g）＋3H₂（g）2NH₃（g） ΔH＝－92.4 kJ/mol。在500 ℃、20 MPa时，将N₂、H₂置于一个固定容积的密闭容器中发生反应，反应过程中各种物质的量浓度变化如图所示，回答下列问题：

（1）计算反应在第一次平衡时的平衡常数K＝           。（保留二位小数）

（2）产物NH₃在5～10 min、25～30min和45～50 min时平均反应速率（平均反应速率分别以v₁、v₂、v₃表示）从大到小排列次序为                      。

（3）H₂在三次平衡阶段的平衡转化率分别以α₁、α₂、α₃表示，其中最小的是     。

（4）由第一次平衡到第二次平衡，平衡移动的方向是____________，采取的措施是____________

（5）请在下图中用实线表示25～60min 各阶段化学平衡常数K的变化图像。

（）的形状决定造型的形状.

A.头发

B.分发区

C.分发片

D.刘海

阅读理解。

     When building houses, people used to think about not only the climate of the areas but also the building

materials and the fashions for their houses. However, since electricity became more and more expensive,

people began to pay much more attention to the energy they could get for their houses and the new ways

they could find to protect their houses from both cold and heat.

     Now, houses of an old yet new type have been widely built. In some parts of the world, people share

their houses with their livestock (家畜). During cold weather, they gather their cows, goats, or other animals

and keep them on the first floor of their houses. The reasons are that the animals can be protected from the

cold and that they can help to heat the houses as well. The body heat given off by the animals rises to the

second floor of the houses, where people live. By sharing their houses with their livestock, people gain a

source of heat.

     People who live in or near cities do not usually keep livestock. However, home builders use the fact that

heat rises. This natural law can be used in building houses in these areas. Instead of keeping livestock on the

first floor, builders fill it with large rocks. As they are open to the sun's rays during cold weather, these rocks

take in heat. They also give off the heat, and, of course, the warm air rises into the living areas of the houses.

So these houses are energy-saving.

     House-building becomes a great challenge (挑战) to building designers and energy engineers. They try to

meet this challenge by learning from old traditions and by using modern technology. And someday in the future, people will be able to live in more energy-saving houses.

1. What did people begin to consider as electricity was no longer cheap?

A. The climate of their areas.

B. The energy for their houses.

C. The fashions for their houses.

D. The building materials for their houses.

2. People in some areas gain a source of heat by _______.

A. keeping their livestock downstairs

B. protecting their livestock from the cold

C. sharing their houses only with their cows

D. living on the second floor with their livestock

3. The underlined words "natural law" in the third paragraph refer to the fact that _______.

A. heat raises the temperature in the houses

B. heat goes in the upward direction

C. heat goes up if temperature is raised

D. heat increases the temperature of rocks

4. From the passage, we can conclude that ______.

A. people will no longer consider building materials in the future

B. energy-saving buildings will become more popular in the future

C. almost all people will move into the houses heated by large rocks

D. energy engineers will devote themselves only to modern technology

只入心肝二经的重镇安神药是

A．朱砂

B．磁石

C．琥珀

D．龙骨

E．牡蛎

患者女，40岁。近1个月来自觉疲乏，无力，头晕，医嘱硫酸亚铁溶液口服，为减少不良反应正确的给药知道是（）。

A、饭前服用

B、直接喝取

C、茶水送服

D、牛奶送服

E、服药后及时漱口