简答加油机油气分离器的工作原理。

关于欧洲西部叙述正确的是[ ]

A、欧洲西部北临北冰洋，西临太平洋

B、欧洲西部就是人们习惯所说的西欧

C、海岸线十分曲折

D、国家众多，绝大部分属于发展中国家

既清虚热，又除疳热的药物是

A．地骨皮

B．丹皮

C．胡黄连

D．白薇

Lucky is the man who has no “skeleton in his closet.” When a man has done something in his life that he is ashamed of, that he wants to hide, he is said to have a “skeleton in his closet.” Some people may have more than one skeleton.

As we have noted many times, it is hard to find out how these expressions begin. Sometimes, we get some hard facts. But more often we have to depend on guesswork. And that is true of this phrase, which came from England.

Before 1832, English law did not permit a doctor to cut open a dead human body for scientific examination, unless it was the corpse(尸体) of an executed(处决) criminal.

But when it became legal, more and more doctors demanded skeletons for a more scientific study of medicine. It was helping in the advance of modern medicine. The demand had become so strong that men began to rob tombs and sell skeletons to doctors at high prices.

We are told that a doctor would usually buy just one skeleton for scientific study. It became very important in his work. But he had to keep it hidden because most people objected to keeping such a thing. As a rule, the doctor keep his skeleton in some dark corner where it could not be seen, or hide it in a closet.

After a time, people began to suspect every doctor of hiding a skeleton in the closet. From this suspicion, the phrase“a skeleton in the closet”took on a broader, more general meaning: to describe anything that a man wanted to keep others from discovering. It could be proof of a criminal act, or something much less serious. Well, that is one theory.

One writer, however, believes that the phrase might have come from something that really happened. It is his guess that a hidden closet in some old English country home may have turned up a real skeleton, clear proof of some old family shame or crime. Well, one man's guess is as good as another. But this sounds like a story by the great French novelist, Balzac.

Balzac tells us of a man who suspected his wife of having a lover. The husband comes home by surprise. But she hears him and quickly hides her lover in the closet of her bedroom. He enters her room and asks her if she is hiding her lover. He says he will not open the door to the closet if she promises him there is no one there; He will believe her. She answers firmly that she is not hiding anyone in the closet.

The husband then begins to build a solid brick wall against the closet. His wife watches, knowing that her lover will never come out alive. But she will not change her story and admit her guilt.

小题1:Which of the following situations is now suitable for using the phrase “skeleton in the closet”?

A．You have stolen something precious and hide them in the closet.

B．You are a doctor and have to keep a skeleton for research.

C．If you have cut open a dead human body for scientific examination you should keep the

skeleton secret.

D．You have done a crime or done something foolish, but you want to keep others from discovering it.

小题2:Which of the following is right according to the text?

A．In the 19th century, doctors realized the importance of anatomy (解剖) in the development of

medicine.

B．The doctors of the ancient times liked to collect as many skeletons as possible

C．The thieves stole skeletons from tombs in order to help the doctors.

D．It is legal that corpses of anybody are cut open for scientific examination in history.小题3:From the story Balzac told we know that the wife's lover must have become ______.

A．a corpse

B．a phrase

C．a skeleton

D．a story

水轮机调速器与油压装置技术条件规定机组甩负荷后动态品质应达到的要求？

如下图所示，某校园网使用三台Catalyst 6 500交换机构成万兆以太网的主干，其中交换机S1使用千兆以太网技术下连到学生宿舍楼的一台Catalyst 3 548交换机S4，S4下连的用户被划分在VLANID为2～5，VLAN名为jszx2--jszx5的四个VLAN中，要求S1和S4之间使用IEEE 802．1Q国际标准，且在S1和S4之间只允许传输jszx2--jszx5的信息。

请阅读下列关于交换机S4的VLAN配置信息，并补充空白处的配置命令或参数，按题目要求完成交换机S4的相关配置。
Switch-S4-3548#vlan data
Switch-S4-3548(vlan) #vlan2 name iszx2
Switch-S4-3548(vlan) #vlan3 name iszx3
Switch-S4-3548(vlan) #vlan4 name iszx4
Switch-S4-3548(vlan) #vlan5 name iszx5
Switch-S4-3548(vlan) #exit
Switch-S4-3548#configure terminal
Switch-S4-3548(config) #interface (6) (进入端口配置模式)
Switch-S4-3548(config-if) #switchport (7) (配置VLANtrunk模式)
Switch-S4-3548(config-if) #switchport trunk encapsulation (8) (封装协议)
Switch-S4-3548(config-if) #switchport truck allowed (9) (设置可中继的VLAN)
Switch-S4-3548(config-if) #switchport truck allowed (10) (去除不允许中继的VLAN)
Switch-S4-3548(config-if) #exit
Switch-S4-3548(config) #exit
Switch-S4-3548#