问题 问答题 简答题

连接用机械零件有哪些?试举钻机上此类零件二、三例?

答案

参考答案:

连接用机械零件如螺栓、螺母、键、销等。

如:

⑴钻机上除心轴以外,与轴连接的齿轮,离合器均为键连接;

⑵钻机上平衡梁与机架的连接,钻架与A型架的连接,链条及轨板的连接等均为销连接;

⑶钻机用螺栓、螺母的连接极为平凡。

阅读理解

Do you like eating chocolate? Companies spend millions of dollars on tools and machines to make chocolate. With a little ingredients, however, you can turn your kitchen into a chocolate factory. Today we will teach the Cocoa Powder (可可粉)Method(方法), it is easier for beginners. Try it and make your own homemade chocolate.

Here are the ingredients (原料) you need:

cocoa powder — 2 cups (220g) ; butter — 3/4 cup (170g); sugar — 3/4 cup (100g); milk — 2/3 cup (150ml); salt — a little bit ; water — 1 cup (235ml).

Now, please follow these steps. First, mix the cocoa powder and butter in a bowl until you have a smooth paste (酱). Then , add the cocoa powder mixture (混合物)  to the hot water and stir(搅拌). Allow the temperature to rise back up. Put the hot mixture into a bowl,  stir the sugar mixture into the hot cocoa mix. Add milk, stir until smooth. At last, put the mixture into different containers(容器). The chocolate will take the shape of the container. You can put it in the fridge to harden(使变硬)it.

We hope you can enjoy your homemade chocolate.

小题1:What is NOT necessary when we are making chocolate?

A.cocoa power

B.salt

C.water

D.egg小题2:Which is the right order to make chocolate?

① Put sugar and milk into the mixture.

② Mix the cocoa powder and butter

③ Place the mixture into containers, and put it in the fridge.

④ Add hot water and stir.

A.②④①③

B.②①④③

C.②④③①

D.④②①③小题3:What’s the best title of this passage?

A.How to Build a Chocolate Factory.

B.The Ways to Eat Chocolate.

C.How to Make Chocolate at Home.

D.The Cocoa Bean Method.小题4:The information above may come from a ________.

A.story book

B. magazine

C.sports newspaper

D.travel guide

不定项选择