Which of the following metals is environmental friendly?
A: iron
B: aluminum
C: copper
D: titanium
A: iron
B: aluminum
C: copper
D: titanium
举一反三
- Which of the following elements is a d-block element? A: Copper B: Chlorine C: Aluminum D: Sodium
- Metal utensils such as iron, copper, or aluminum are appropriate to prepare decoctions.
- The metal utensils made from iron, copper and aluminum are forbidden to decoct drugs.
- The metals which we find in the earth _____ iron, lead and copper.
- 将以下段落翻译成中文：The cylinder head is bolted to the block. The manufacture casts the cylinder head in one piece from iron, from iron alloyed with other metals, or from aluminum alloy. Aluminum has the advantage of combining lightness with rather high heat conductivity.Depending on the style of engine, the cylinder head serves many functions.