腹外疝

已知：

2CO(g) + O₂(g) = 2CO₂(g) △H= -566kJ/mol

N₂(g) + O₂(g) = 2NO(g) △H= +180kJ/mol

则2CO(g) +2NO(g) = N₂(g) +2CO₂(g)的△H是[ ]

A.-386 kJ/mol

B.+ 386 kJ/mol

C.-746 kJ/mol

D.+746 kJ/mol

The fact that blind people can "see" things using other parts of their bodies apart from their eyes may help us to understand our feelings about colour. If they can sense colour differences then perhaps we, too, are affected by colour unconsciously.

Manufacturers have discovered by trial and error that sugar sells badly in green wrappings, and that blue foods are considered unpleasant, and the cosmetics should never be packaged in brown. These discoveries have grown into a whole discipline of color psychology that now finds application in everything from fashion to interior decoration. Some of our preferences are clearly psychological Dark blue is the colour of the night sky and therefore associated with passivity and calm, while yellow is a day colour with associations of energy and incentive. For primitive man, activity during the day meant hunting and attacking, while he soon saw as red, the colour of blood and rage and the heat that came with effort. And green is associated with passive defence and self - preservation. Experiments have shown that colours, partly because of their psychological association, also have a direct psychological effect. People exposed to bright red show an increase in heartbeat, and blood pressure; red is exciting. Similar exposure to pure blue has exactly the opposite effect; it is a calming colour. Because of its exciting connotations (涵义) , red was chosen as the signal for danger, but closer analysis shows that a vivid yellow can produce a more basic state of alertness and alarm, so fire engines and ambulances in some advanced communities are now rushing around in bright yellow colours that stop the traffic dead.

Our preferences for certain colours are（）。

A. partly due to psychological factors

B. linked with our primitive ancestors

C. dependent on our character

D. associated with the time of day

汽车金融公司的资金来源包括境内股东单位的各种存款。( )

什么叫PN结？为什么说PN结具有单向导电性？

( )是指利用计算机和网络信息手段，将物业管理企业及执(从)业人员的基本情况，经营业绩，经营中违规、违法劣迹及受到的处罚等情况按规定格式进行记录，并向社会公布，接受社会监督。

A．物业管理企业信用档案
B．物业管理企业管理档案
C．物业管理企业资质档案
D．物业管理企业信誉档案