Metal is a common material in engineering. Which of the following is not a metal? A. iron B. aluminum C. glass D. copper 相关知识点: 试题来源: 解析 C。本题考查材料科学中金属的概念。铁(iron)、铝(aluminum)和铜(copper)都是常见的金属。而玻璃(glass)是一种非金属材料,主要由硅酸盐等组成...
a dispersion medium and a gellifying agent, wherein the dispersion medium and the gellifying agent each contain an organic compound having a reactive functional group such that the slurry is cured by a reaction between the organic compound in the dispersion medium and the organic compound in the...
The metal is an example of a ___ material. A. natural B. artificial C. soft D. liquid 相关知识点: 试题来源: 解析 A。解析:金属是一种自然材料,选 natural。B 选项 artificial 人造的,金属不是人造材料;C 选项 soft 软的,与金属特性不符;D 选项 liquid 液体,金属是固体。反馈 收藏 ...
awhen a compound contains a metal that can form more than one type of cation, the charge on the cation of the metal is designated by a Roman numeral placed in parentheses immediately following the name of the metal. 当化合物包含可能形成超过正离子的一个类型的一种金属时,充电在金属的正离子是...
dull and rusty C. broken and useless D. light and cheap 相关知识点: 试题来源: 解析 A。“shiny and elegant”表示闪亮且优雅;“dull and rusty”表示暗淡且生锈;“broken and useless”表示坏了且没用;“light and cheap”表示轻且便宜。金属饰品一般是闪亮优雅的,所以选 A。反馈 收藏 ...
百度试题 结果1 题目A mixer is usually ___ of metal and plastic.相关知识点: 试题来源: 解析 made 反馈 收藏
百度试题 题目A ___is a sealed metal container for food, drink, or paint.相关知识点: 试题来源: 解析 can 反馈 收藏
英语翻译1.An organometallic compound of the formula (R1)m M(PR23)x,where M is a metal selected from the group consisting of manganese,technetium,rhenium,iron,ruthenium,osmium,nickel,palladium,and platinum; each R1 is independently selected from the group consisting of hydrogen,deuterium,H2,D2...
百度试题 题目A mixer is usually ___ of metal and plastic.? 相关知识点: 试题来源: 解析 made 反馈 收藏
The metal is a combination of silicon (硅) and stainless steel. The metal is strong, so it can support the weight of the body. The plastic is a flexible material. It allows the joint to move easily. Medicines have been discovered that will prevent the body from rejecting the artificial ...