为减少底层液与苯己内酰胺一同排出的危险，特在苯己贮罐安装（）A、高液位报警 B、高界

阅读理解。

    You may know that some English words come from French.

    One interesting thing is that when we talk about meat at the table, we use French words. But when we talk

about animals, English words are used. For example, a pig is called pig when it's living, but it's called pork

when it is killed and its meat is brought to the table.

    When the Normans (诺曼人) ruled (统治) England, the English farmers were made to raise animals for

food, but they could not eat the meat. The meat was sent to the Normans' tables. The farmers could only eat

rabbit, because rabbits ran all over the fields and rabbit meat was cheap. So the meat of a rabbit was not

changed into a French word. It was called rabbit by the English farmers at that time and is still called rabbit

today.

1. We know that the word "pork" is _____. [ ]

A. a kind of animal

B. really an English word

C. really a French word

D. used only by Frenchman

2. The English farmers were made to raise animals by _____. [ ]

A. the farmers themselves

B. the landlords (地主)

C. the Normans

D. the owners of the animals

3. Which of the following sentence is wrong? [ ]

A. A rabbit is a kind of animal.

B. "Pig" is another way of saying "pork".

C. The expressions of some meat of animals was changed into French words.

D. The farmers could eat rabbit, because it was cheap when the Normans ruled England.

4. When the meat of a cattle (奶牛) is brought to a table, its _____. [ ]

A. known as "pork" in English now

B. a kind of French food

C. changed to another thing

D. called "beef" in English now

5. In the sentence "When the Normans ruled England", which of the following can substitute (替换) "ruled"? [ ]

A. had power to control the country and the people of

B. moved to live in

C. were born in

D. became the king of

已知2SO₂(g)+O₂(g)2SO₃(g) △H=－196kJ·mol^-1， 500℃时将2mol SO₂和1molO₂装入一体积恒定的

10L密闭容器中，2分钟（t1）时达到平衡。如下图所示：

请回答下列问题

（1）用O₂表示2分钟内该反应的平均反应速率为________mol·L^-1·min^-1。计算500℃时该反应的平衡常数

K=________，

（2）上图表示该反应在时刻t1达到平衡后，求平衡时O₂的转化率________，时刻t2因改变某个条件而发生变化的情况：图中时刻t2发生改变的条件可能是________________（写一个即可）。

（3）在上述条件下起始装入的SO₂和O₂各2mol，达平衡后设SO₃的转化率为x，列出求x的方程

________________。（不必求出x）

（4）某温度时，该反应的平衡常数K=800，则该温度________500℃（填“＞”、“＜”、“＝”）。

建筑安装工程概算评审包括对( )等进行评审。

A．工程量计算、概算定额选用、运费及材料差价
B．工程量计算、预算定额选用、运费及材料差价
C．工程量计算、预算定额选用、取费及材料价格
D．工程量计算、概算定额选用、取费及材料价格

劳动关系的特点包括（）。

A、志愿性

B、劳动关系主体力量不平衡

C、劳动关系具有人身关系的性质

D、劳动关系是一种隶属关系

关于鲸蜡和蜂蜡的叙述错误的是（）

A.两者均含有少量游离高级脂肪醇

B.具有一定的表面活性作用

C.易酸败

D.较弱的W/O型乳化剂

E.也可在O/W型乳剂型基质中起稳定作用