（）是支架掩护后部和实现放顶煤的关键部件。 A.尾梁 B.顶梁 _爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

（）是支架掩护后部和实现放顶煤的关键部件。

A.尾梁

B.顶梁

C.插板

D.尾梁千斤顶

答案

参考答案：A

阅读理解

阅读短文，回答问题。

Here is a map of the United States. It's yellow. The U. S. is a beautiful country. In the U. S. they speak
English. Look at the girl, she is from the U. S. She has short, curly and blond hair. She lives in New York.
Look at the Statue of Liberty. It's white. Do you know this flag? It has three colours, blue, white and red. It
has fifty white stars, red and white stripes. It's very beautiful.

1.	What do they speak in this country? ____________________________________________
2.	How many stars are there in this flag? ____________________________________________
3.	Where does this girl live? ____________________________________________
4.	What colour is the Statue of Liberty? ____________________________________________

判断题

现在我国非常需要的配送中心是自用型配送中心，而不是公共型配送中心。