Air is a mixture (混合物),not a compound of gases. 相关知识点: 试题来源: 解析 答案: mixture.考查首字母填空,根据句意:空气是混合物,不是气体混合物.mixture是名词"混合物"是可数名词,因为不定冠词a, 所以此处天mixture. 空气是混合物,不是气体混合物....
一、 写出画线词语的汉语意思。1. Air is a mixture, not a compound of gases.2. I need to buy a new computer monitor.3. The monument was built in memory of George Washington, the first President of the United States. 相关知识点: 试题来源: 解析 1.混合物 2.显示器 3.纪念碑 ...
别名:ZINC ANTI-SEIZE - Zinc Dust and Petrolatum Compound (Aircraf 密度:650 g/cm3 符合MIL-T-22361,MIL-AA-59313标准的防卡剂Zinc Anti-Seize™ is a smooth mixture of zinc dust and petrolatum compound to prevent seizing and corrosion within metal joint assemblies. Recommended for aluminum and ...
More importantly, individual transformation products can be more toxic and up to an order-of-magnitude more persistent than the parent chemicals, such that the overall risks associated with the mixture of transformation products are also higher than those of the parent flame retardants. Together our...
百度试题 结果1 题目7) Air is a ___ of elements. A. mixture B. compound C. atom D. material 相关知识点: 试题来源: 解析 7)A 反馈 收藏
百度试题 结果1 题目3. Air is a mixture (mix), not a compound of gases. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Which of the following matters is a compound? a) Copper b) Water c) Saline solution d) Air Solution Formation: When a substance gets dissolved inside a solvent, the two materials form intermolecular forces together that result in the solute getting spread out throug...
Which of the following is a mixture? Why? (a) Water (b) Air (c) Ammonia (d) Methane Mixtures In chemistry, a mixture is defined as the combination of two or more substances. The substances must retain their individual chemical identities in order for the combina...
Mixture of isobutylene copolymer and polybutylene; exfoliation; air barrierdoi:US7425591 B2The present invention is a composition including an isobutylene-based copolymer and polybutene. The copolymers may be mixed with an exfoliating compound and clay, the entire composition forming a nanocomposite. ...
百度试题 结果1 题目3. Air is a mixture (mix), not a compound of gases. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏