电控发动机在理论空燃比附近工作时三元催化转化装置的转换效率最高

春秋战国时期引起社会变革的最根本因素是：

A．各国之间的争霸称雄

B．各国之间的合纵连横

C．各国之间的激烈战争

D．社会生产力的迅速提高

至宝丹的功效与下列哪项无关（）

A.解毒

B.开窍

C.化浊

D.清热

E.行气温中

I was reading these interesting stories behind a group of great logos (标志) in the world. Personally Nike is my favorite one—it’s so simple. And I liked the stories behind them, which made me forget all other things. McDonald’s, Apple, Mercedes Benz and Adidas own great logos as well, and they are among my favorites.

Nike

In the Greek myth, Nike is the goddess of victory and the source of inspiration for soldiers. This logo represents the wing in the famous statue of the Greek goddess. Nike’s logo was designed by Carolyn Davidson in 1971 for $ 35, and was registered as a trademark in 1995.

McDonald’s

The logo was designed in 1962 by Jim Schindler to resemble the archshaped(拱形的) signs on the side of the company’s then walk-up hamburger stand. Later on, the two golden arches were combined together to form the M. The McDonald’s name was added to the logo in 1968.

Apple

There are different stories behind Apple’s logo. The first logo was a reference to the religious story of Adam and Eve, in which the apple represented the fruit of the Tree of Knowledge. One year later, the second logo was designed in 1977 by Steven Jobs and Ronald Wayne, and it described Sir Isaac Newton sitting under an apple tree. This logo didn’t stay long. One year later it was replaced almost immediately by graphic designer Rob Janoff’s “ rainbow apple”, a rainbow- colored silhouette (轮廓)  of an apple with a bite taken out of it. And then the rainbow- colored apple was replaced by the one- colored logo in 1998. It has not been changed so far.

Mercedes Benz

The Mercedes Benz logo, which was originally created by Gottlieb Daimler in 1909, consists of a simple description of a three- pointed star that represents its rule of the land, the sea and the air. The company was founded by Gottlieb Daimler and Wilhelm Maybach. Marcedes is the name of Maybach’s elder daughter, while Benz came as a result of a combination with Benz, Cie. and DMG in 1926.

小题1:What does the author think of the stories of the great logos?

A．They are boring

B．They are out of date.

C．They are attractive

D．They are practical小题2: What does Nike’s logo stand for?

A．The goddess of victory

B．The source of inspiration for soldiers

C．The statue of the Greek goddess

D．The wing of the Greek goddess小题3:We can learn that Apple’s present logo is______.

A．the religious story of Adam and Eve

B．a bitten apple with only one color

C．Newton’s sitting under an apple tree

D．the rainbow- colored bitten apple小题4:Which of the following time orders describes the births of the great logos?

A．Mercedes Benz – McDonald’s – Nike – Apple.

B．Nike – McDonald’s – Apple – Mercedes Benz.

C．Mercedes Benz – Apple – Nike –McDonald’s.

D．Nike –Mercedes Benz –McDonald’s – Apple,

颜面疔疮治宜下列何法为主（）

A.散风清热

B.泻火解毒

C.凉血清热

D.清热解毒

E.和营解毒

常用的离子交换树脂类型有哪些？影响离子交换速度的因素有哪些？