Water is a good conductor of electricity because ___. A. it is clear B. it is liquid C. it can carry electric current easily D. it is cold 相关知识点: 试题来源: 解析 C。中文解析:水是电的良导体是因为它能很容易地传导电流。A 选项“它是清澈的”,B 选项“它是液体”,D 选项“它是...
Electricity can flow through wires. What material is a good conductor of electricity? A. Wood B. Rubber C. Metal D. Paper 相关知识点: 试题来源: 解析 C。解析:金属是良好的导电材料。A 选项木头、B 选项橡胶、D 选项纸都是绝缘体,不导电。
A. Graphite B. Silicon C. Phosphorus D. Sulfur 相关知识点: 试题来源: 解析 A。题目中描述的元素是非金属且是良好的电导体。硅是半导体不是良好导体。磷和硫都是非金属但不是电导体。而石墨是非金属且是良好的电导体。反馈 收藏
Water is not only a good conductor of electricity but a good conductor of panic as well.( )A: 海水不仅导电好,还能传递恐慌。B: 海水不仅导电性很强,传递恐慌也很快。C: 海水能很好地传导电和恐慌。D: 海水不仅能导电,还能传递恐慌。 相关知识点: ...
Which of the following materials is a good conductor of electricity? A. glass B. rubber C. copper D. plastic 相关知识点: 试题来源: 解析 C。铜是良好的电导体。选项 A 玻璃、选项 B 橡胶和选项 D 塑料都是绝缘体。本题涉及物理知识点是导体和绝缘体,英语知识点是材料名称的表达。反馈 收藏 ...
Copper is a good conductor of electricity. Which of the following is not a good conductor? A. Silver B. Rubber C. Gold D. Aluminum 相关知识点: 试题来源: 解析 B。解析:在自然科学中,橡胶(rubber)是绝缘体,不是电的良导体。而银(silver)、金(gold)和铝(aluminum)都是良好的电导体。从英语...
题目The element that is a good conductor of electricity is ___. A. oxygen B. sodium C. phosphorus D. sulfur 相关知识点: 试题来源: 解析 B。钠是一种金属元素,金属通常是良好的导电体。氧、磷、硫都不是良好的导电体。反馈 收藏
Which substance is a good conductor of electricity? A. Glass B. Wood C. Metal D. Plastic 相关知识点: 试题来源: 解析 C。本题考查物质的导电性。Glass(玻璃)、Wood(木头)、Plastic(塑料)都是绝缘体,不导电;Metal(金属)是良好的导体。反馈 收藏 ...
试题来源: 解析 C。解析:在化学里,氯化钠(sodium chloride)是电解质,其水溶液能导电。而糖(sugar)和乙醇(ethanol)是非电解质,它们的水溶液不导电,油(oil)也不导电。这里“conductor”是导体的意思,“aqueous solution”表示水溶液,这些词汇准确描述了化学中的导电性质相关概念。
Is human body a good conductor of electricity? The body is merely one large machine full of circuitry and electricity. Since practically 70% of the body is made up of water, it is considered to be a good conductor of electricity on average. Which metal is bad conductor of electricity? Bis...