若A表示一个单项式，B表示一个三项式，则AB是（）项式。

发布时间：2017-05-05 13:25 │ 来源：www.tikuol.com

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问题：

若A表示一个单项式，B表示一个三项式，则AB是（）项式。

考点：整式的乘法

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阅读理解。

Different types of maps have different uses. Tourist maps, for example, have signs (标志) to show places of interest in an area. When tourists read these maps, it is easy for them to find where to go and what to see in a place and it is easy for them to go and find their ways to these places.
Road maps show large areas so that people can plan long journeys. Different types of roads are given different numbers. For example, if you want to go to Wood Green, you just follow No. 621 Road and keep looking at the road signs.
Distribution maps (分布图) use colors or signs to show facts about an area. For example, where different languages are spoken, how many people live in an area, how cold and hot some places are, or whether a place is short of water.
Some maps, such as railway maps, use straight lines to show everything. This is easy for people to read. Trains are fast. People don't have to think about small places they go past. They just need to know the two ends of their trips.

1. Jim wants to visit some places of interest. Which map does he need most?

A. A road map.
B. A tourist map.
C. A distribution map.
D. A railway map.

2. How can you tell different roads on Road maps?

A. By finding the numbers.
B. By using different colors.
C. By using straight lines.
D. By looking at the road signs.

3. Which of the following can Distribution maps tell us?

A. How to get to Germany.
B. How to plan a long journey.
C. Which place is short of water.
D. Where a famous museum is.

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A.Ⅱ

B.Ⅲ

C.Ⅳ

D.Ⅴ

E.Ⅵ

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下列叙述中，对预先疏干描述正确的是（）。

A、灵活性大、可以一次性达到矿山最终开采要求

B、容易实现开采工程与疏干工程相结合，工程利用率高

C、施工条件好、安全、建设速度快、排出水流不受或少受污染

D、疏干强度大、适用范围广、疏干深度限制

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A．级别

B．地域

C．指定

D．移送

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