说明密炼机XM—270/20³40型的含义。

Air France SA said Monday that its second-quarter net profit fell 35 percent to €57 million ($57.4 million), but sales were steady and operating profit surged.Earnings before interest and tax, a measure of operating income, gained 86 percent to €141 million as fuel costs fell and cargo traffic rose. Air France has been hurt less than rivals such as British Airways PLC and Lufthansa AG by the slowdown on North Atlantic routes following the war on Iraq in 2003 because it has fewer flights in that market.Net income fell as the airline paid deferred taxes that came due. Sales rose 0.9 percent to €3.2 billion. The carrier lost about €80 million in revenue because of a four-day strike by pilots in September. An accord was reached tying future pay increases to inflation. The carrier said that first-half fuel costs fell 15 percent to €680 million. Cargo traffic rose 11 percent in the second quarter, while passenger traffic rose 1.1 percent. The airline’’s shares gained 87 cents, or 7.7 percent, to close at €12.11.Separately, Air France and Alitalia SpA agreed to buy 2 percent stakes in each other as Europe’’s second- and sixth-largest airlines deepen their partnership.

€ in "€57 million" and "€141 million" probably stands for________.

A．English

B．the euro

C．European

D．European Currency Unit

History, as we know, is filled with facts, with places, names, dates, and events.

History is also filled with feelings, with pain, joy, excitement, and fear.

Facts are set down in books, but what happens to feelings? How can you take the pain, for example, and write it into a history book? You can’t. But you can put it to music. Take the blues for example.

The blues started when black musicians in the South began to sing about their hard times, those times which made them feel blue. The early blues was the beginning of other musical styles, from jazz to rock and roll.

Music, you might say, is a record of feelings.

Of course, facts are important: the civil rights movement, the race for space, the Vietnam War. But the feelings behind these events – the pride of being black, the excitement of a rocket blast (点火起飞), the pain of a war – are also an important part of history.

小题1:In the passage, the word “blue” and the word “blues” are related to __________.

A．a feeling and a kind of music

B．a color

C．a kind of music and a person

D．people and their feelings小题2:According to the writer’s idea, what can make people feel blue?

A．A history book

B．Music.

C．History.

D．Hard times.小题3:Besides the above, the writer also explains ___________.

A．what caused the Vietnam War

B．the feelings behind some important events

C．the relation between history and music

D．why he wrote the article

幽门管溃疡（）。

A.多为上腹正中或偏右节律性空腹疼痛

B.多为剑突下正中或偏左节律性餐后疼痛

C.上腹疼痛多在餐后发生，呕吐多见

D.上腹部持续性较剧烈疼痛，放射至背部

E.右上腹节律性疼痛，夜间痛和背部痛多见且突出

管道水力学计算要满足( )要求。

A．不溢流
B．淤积
C．不冲刷管壁
D．要注意通风

加热炉伸缩式蒸汽吹灰器不缩回的原因是（）。

A.温度信号故障或限位开关故障

B.压力信号故障或机械故障

C.限位开关故障或机械故障

D.温度信号故障或机械故障