解析 C。“mix cement”表示“把水泥和水混合并搅拌”。选项 A“eat cement”表示“吃水泥”,这显然不对;选项 B“play with cement”表示“玩水泥”,不合适;选项 D“sell cement”表示“卖水泥”,与句子意思不符。在建筑工地要帮助工人搬砖和搅拌水泥,所以正确答案是 C。
Cement has what is called a high compressive strength which means that it can put up with a lot of weight without changing its shape or moving in any way. However, cement has a low tensile strength which means it cannot withstand being pulled or stretched a lot without breaking, this means...
The concrete mixture includes cement, sand, and water. 3 Mix The result of combining elements in cooking or baking. The cake mix is ready to go into the oven. 4 Mixture A material composed of constituents that retain their properties. A bowl of salad is a mixture of various vegetables. ...
Cement Undergoes a chemical reaction with water (hydration) in concrete. When water is added, the cement begins to harden, binding the aggregate. 7 Concrete Consists of cement, aggregate, and water, mixed in various ratios. The concrete mix was prepared with a specific ratio for the sidewalk....
What Is a Cement Mixer? Also known as a concrete mixer, a cement mixer is a large piece of equipment used in construction sites. Its function is to mix water, sand, and gravel to produce concrete in large quantities. Mixers are a replacement of traditional mixing methods like the use o...
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What is cement Cement is a powdery substance made from a mixture of elements found in nature, such as limestone, clay, and other minerals. When mixed with water, it becomes a paste that can harden and bind other materials together. Think of it as the "gl
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I have a friend who lives in a cement block house. Before I met her, I never knew that entire houses could be built out of these blocks. I suppose it's a pretty durable structure, considering that concrete is tough. However, she can't really hang things on the walls, unless she use...
Concrete is made up of three basic components: water, aggregate and Portland cement. Because concrete is such a durable material, it is used for construction projects of all sizes.