在结构化程序设计中，模块划分的原则是A．各模块应包括尽量多的功能 B．各模块的规模应

火车以 70km/h 的速度通过一段距离，子弹以 600m/s 的速度从枪口射出，则（　　）

A．70km/h是平均速度

B．70km/h是瞬时速度

C．600m/S是平均速度

D．600m/s是瞬时速度

《电业安全工作规程》中规定，设备对地电压为（）及以上属于高压。

A.100V；

B.220V；

C.250V；

D.400V。

氨气是一种重要化合物，在工农业生产、生活中有着重要应用．

（1）下列装置可用于实验室制取少量氨气的是______（填序号）

（2）“氨的催化氧化”是工业生产硝酸的重要步骤．某化学课外活动小组设计了如下装置模拟该实验过程，并用水吸收制取硝酸（固定装置略去）：

①A装置的分液漏斗中盛放浓氨水，则烧瓶中盛放的药品应该是______（填化学式）

②C装置中发生的化学反应方程式为______．③反应后，装置E中除存在较多的H⁺外，还可能存在的一种阳离子是______，试设计实验证明这种离子的存在______．

④下列哪些装置可以同时起到装置D和E的作用______（填代号）

（3）若将氯气和氨气在集气瓶中混合，会出现浓厚的白烟并在容器内壁凝结，另一生成物是空气的主要成分之一，请写出反应的化学方程式______（不必配平），该反应生成的还原产物中化学键类型是______．

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,

绿色食品证书须在年检后（）方为有效。

A.加盖“年检合格章”

B.重新换发

C.领取副证

D.企业自行标注