1、用于熟人之间的打招呼 What's up 意思是：最近怎么样？最近在忙什么呢？（如果是遇到不太熟悉的人，这种情况下一般是用“How are you”）例句：Henry，long time no see，What's up 亨利，好久不见，最近怎么样？类似的表达还有：how is it going？how is everything？how have you been?How are you ...
Why is iron described as an element? What is the classification of manganese? What is the atomic number of iron? What is the mass number of iron? What kind of substance is sulfur and iron? What is the classification of iodine? What is the chemical formula for iron ore?
Brilliant though it is,Project Debater has some weaknesses.It takes sentences from its library of documents and prebuilt arguments and strings them together.This can lead to thekinds of errors no human would make. Such wrinkleswill no doubt be ironed out, yet they also point to a fundamental ...
Iron is a chemical element and metal used in various applications, while "irons" typically refers to tools or devices made of iron, including golf clubs, branding tools, or handcuffs.
What is the iron (III) phosphide formula?Writing Ionic FormulasWhen writing ionic formulas, the criss-cross method can be used. This method uses the charges or oxidation numbers of elements. The oxidation numbers can be determined from the group numbers of the group A elements. Transition ...
- **选项a(10 mg)**:低于推荐值,适用于部分男性或绝经后女性的摄入量。 - **选项b(15 mg)**:接近但未达到成年女性标准,可能为其他机构的轻度差异数据。 - **选项c(18 mg)**:符合NIH等权威机构对成年女性的推荐值,正确。 - **选项d(20 mg)**:通常针对孕妇等高需求群体,非一般成年女性的推荐量。
Iron is a pure metallic element, while steel is an alloy made primarily of iron combined with carbon and sometimes other elements.
Iron and steel can often be mistaken for the same thing. However, there are fundamental differences between the two materials. Factors like strength, durability, corrosion, cost, versatility, and sustainability are the key differences between the two, an
Not all steel is the same, however. There are many different steel alloys, each of which exhibits unique properties. What are steel alloys exactly? The Basics of Steel Alloys Steel alloys consist of steel with at least one other added element. All types of steel contain iron and carbon. ...
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