Equal size balls of cork, lead, aluminum and steel are placed in water. Which one will float? A: Lead B: Cork C: Aluminum D: Steel
Equal size balls of cork, lead, aluminum and steel are placed in water. Which one will float? A: Lead B: Cork C: Aluminum D: Steel
An advantage of aluminum pistons， when compared to cast iron pistons is （）.
An advantage of aluminum pistons， when compared to cast iron pistons is （）.
Metal utensils such as iron, copper, or aluminum are appropriate to prepare decoctions.
Metal utensils such as iron, copper, or aluminum are appropriate to prepare decoctions.
Deepdrawingismosteffectivewithductilemetals,suchas. A: aluminum B: brass C: copper D: mildsteel
Deepdrawingismosteffectivewithductilemetals,suchas. A: aluminum B: brass C: copper D: mildsteel
The metal utensils made from iron, copper and aluminum are forbidden to decoct drugs.
The metal utensils made from iron, copper and aluminum are forbidden to decoct drugs.
The reinforced concrete construction with aluminum surface enhanced structural design and reduced its costs.
The reinforced concrete construction with aluminum surface enhanced structural design and reduced its costs.
Which of the following metals is environmental friendly? A: iron B: aluminum C: copper D: titanium
Which of the following metals is environmental friendly? A: iron B: aluminum C: copper D: titanium
Mostconductingmaterialssuchascopper,aluminum,iron,nickel,andtungsten（）. A: increaseinresistancewithincreasedtemperature B: increaseinresistancewithdecreasedtemperature C: decreaseinresistancewithincreasedtemperature D: increaseinconductancewithincreasedtemperature
Mostconductingmaterialssuchascopper,aluminum,iron,nickel,andtungsten（）. A: increaseinresistancewithincreasedtemperature B: increaseinresistancewithdecreasedtemperature C: decreaseinresistancewithincreasedtemperature D: increaseinconductancewithincreasedtemperature
Which of the following is recyclable material? （ ） A: Aluminum B: All the options C: Glass D: Cardboard
Which of the following is recyclable material? （ ） A: Aluminum B: All the options C: Glass D: Cardboard
Which of the following elements is a d-block element? A: Copper B: Chlorine C: Aluminum D: Sodium
Which of the following elements is a d-block element? A: Copper B: Chlorine C: Aluminum D: Sodium