Metals ___ When they are heated.
Metals ___ When they are heated.
Questions 22～25 are based on the following telephone interview. What is the conversation mainly about A: How to care for precious metals. B: A standard unit for measuring weight. C: The value of precious metals. D: Using the metric system.
Questions 22～25 are based on the following telephone interview. What is the conversation mainly about A: How to care for precious metals. B: A standard unit for measuring weight. C: The value of precious metals. D: Using the metric system.
Consider a cement wall reinforced with steel bars. Into which category of materials would you place reinforced concrete? A: Metals B: Non Metals C: Composites D: Ceramics
Consider a cement wall reinforced with steel bars. Into which category of materials would you place reinforced concrete? A: Metals B: Non Metals C: Composites D: Ceramics
The metals which we find in the earth _____ iron, lead and copper.
The metals which we find in the earth _____ iron, lead and copper.
( ) is the wearing away of metals due to a chemical reaction, commonly known as rusting.
( ) is the wearing away of metals due to a chemical reaction, commonly known as rusting.
12. We specialize ____ all kinds of metals and are always ready to buy in large quantities.
12. We specialize ____ all kinds of metals and are always ready to buy in large quantities.
材料可分为哪些类？ A: Metals B: Ceramics C: Polymers D: Composites
材料可分为哪些类？ A: Metals B: Ceramics C: Polymers D: Composites
A challenging new area in inorganic chemistry is ---- the role of transition metals in the biochemical catalysts called enzymes.
A challenging new area in inorganic chemistry is ---- the role of transition metals in the biochemical catalysts called enzymes.
A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers.
A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers.
What was rewarded to the winners in Modern Olympic Games A: Metals B: Medals C: Olive wreaths
What was rewarded to the winners in Modern Olympic Games A: Metals B: Medals C: Olive wreaths