二项式(x+12x)4的展开式中的常数项是______．

世界反法西斯战争胜利的根本原因是

A．世界反法西斯力量的联合和世界人民的相互支持

B．斯大林格勒保卫战的胜利

C．英法等国放弃纵容侵略的绥靖政策

D．美苏等工业大国参战，提供了大量的物质援助

A mobile phone is no longer just a phone -- it is also a music player, video camera and personal organizer. And mobile phones with television programming are just around the corner. But the more functions cell phone manufacturers add, the greater the amount of power the phones use and the less practical running them on lithium (锂) batteries becomes -- so the race to find a viable alternative is on.

Two of the world's biggest electronics makers, Hitachi and Toshiba, are currently competing against each other to come up with an alternative, most likely to be micro fuel cells. The task has been set by Japan's second largest mobile phone provider, KDDI, which wants its customers to soon be able to use special television programming on their handsets, and has asked the two electronics companies to come up with a better power source. Hitomi Murakami, of KDDI, says battery-operated mobile phones cannot keep up with the new applications. "We're looking at various ways to expand content and services that we can provide to the people. And we don't want to have battery issues delaying us from doing that," he says.

Hitachi's Atsushi Morihara says it is a critical race for both of the companies as the resulting product will have a major impact on the mobile market in the future. "We are in competition and it's up to both of us to come up with a good product. A product that will satisfy KDDI's needs. I think I can go as far to say that the winner will take all."

Miniaturized direct methanol (甲醇) fuel cells are different batteries in that they create power instead of simply storing it. That power is made by new technology utilizing cheap methanol. If all gees to plan, come 2007, Japanese phone users will not use an electric charger to power their mobiles, they will instead carry a small bottle of methanol and with just a few squirts, they will have power for their phones. But the method has its downsides, including how passengers will be able to take small mounts of flammable methanol on airliners. Fumio Ueno of Toshiba says that once developed, the uses of miniaturized direct methanol fuel cells have endless possibilities.

小题1:The lithium batteries are becoming improper for the cell phone because ______.

A．there is a television in the phone

B．it is inconvenient to use

C．it can't provide enough power

D．people have found substitutes小题2:According to the passage, Toshiba ______.

A．is in critical competition with KDDI

B．will probably beat its rival

C．attaches great importance to methanol fuel

D．is one of the largest battery provider小题3:Which of the following is NOT the characteristic of methanol fuel?

A．Easy to catch fire.

B．Portable.

C．Inexpensive.

D．Available everywhere.小题4:The best title for the passage is ______.

A．Search for better phone power.

B．Development of cell phone battery.

C．Competition between two electronic firms.

D．Advantage and disadvantage of methanol fuel.

每辆押运车必须至少配备（）押运员、（）解款员、（）驾驶员。

弱膨胀弱分散泥页岩层的阳离子交换容量（）。

A、高

B、低

C、一般

D、无法判断

铁氧体