其他镀或涂锌的铁窄板材

阅读理解。

     TV news programs report the weather. Radio stations tell us the weather, too. Newspapers show us

weather forecasts on maps.

     Why do people want to know about the weather? People want to make plans. Some people want to have

a good time with friends. Other people want safety while doing their jobs.

     Airport managers need to know about the weather.In bad weather,their planes cannot fly. Farmers need

to know about the weather. In bad weather, they must protect their crops. Fisherman need to know about the

weather. In bad weather, they cannot go out to fish.

     Computers help us know about the weather. They get new weather information quickly. They can use this

to predict how the weather might change. Unfortunately, we can still only guess the weather.We all hope that

weather will be easier to predict in the future.

1. Where can you get information about the weather?

_________________________________________________

2. Why do people need weather forecasts?

_________________________________________________

3. Why do farmers need to know about the weather?

_________________________________________________

4. Do fishermen need weather forecasts? Why or why not?

_________________________________________________

5. Can we use computer to predict how the weather might change?

_________________________________________________

如图1-2-4所示，一平直的传送带以速度V=2m/s做匀速运动，传送带把A处的工件运送到B处，A、B相距L=10m．从A处把工件无初速地放到传送带上，经过时间t=6s,能传送到B处，欲用最短的时间把工件从A处传送到B处，求传送带的运行速度至少多大？

赏析《采薇》艺术特征。

期货从业人员应当保守的秘密包括（）。

A．执业过程中所获得的未公开的重要信息

B．投资者个人隐私

C．所在期货经营机构秘密

D．国家秘密

说明Walsh码在IS-95A上下行链路中的作用分别是什么？什么是64阶正交调制。