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how much chlorine is safe to use? 包含78720个检索结果
that specify (详细说明) how much chlorine can be used in swimming pools. In China, every liter (升... Agency. This is enough chlorine to kill bacteria while still being safe for people to swim in.Here ……
2018年03月25日
). They can have both good and bad sides. It depends on how we use them.How did I solve it?When it comes... Haber. People developed chemical fertilizer (化肥) based on his research, as well as chlorine gas bombs ……
2018年11月25日
to sort them out.One million Android apps have been graded by how much they invade users’ privacy... and contact lists. However, it is often difficult for the average user to understand how that information ……
2014年11月23日
I don't buy itSituationDave: Jack didn't come to school today because his sister is ill.Mary: I don't buy it! He has no sister!How to useI don't buy it从字面上看意思是"我才不买呢",真正的意思其实就是"我一点儿不相信",面对 ……
2006年04月16日
behavior are keys to a safe swim.Drinking waterAlthough swimmers do not intentionally drink swimming pool... the organisms, making the water safe again.ChlorineChlorine is often used to clean pool water, but it breaks ……
2008年08月05日
.A. it is easy to use the slow cooker to cookB. it is easy to make too much food and overeatC. it wastes a lot of food when using the electric slow cookerD. the writer doesn’t know how to use ……
2018年12月16日
, there is nothing wrong with inventing new things. New inventions can be good or bad. How we use them is more... of chemical fertilizer (化学肥料), as well as chlorine gas bombs (氯气炸弹). He won the Nobel Prize in Chemistry ……
2018年11月18日
’s gentle nature (本性) also shows how yin and yang, when perfectly balanced, lead to peace...’s gentle nature (本性) also shows how yin and yang, when perfectly balanced, lead to peace ……
2022年02月20日
new shape after the smash.D. Light chlorine was drawn by the heat of Earth.1. How did the moon come... to show you how 19 I am.” Much to the villager’s 20 ……
2020年10月18日
be surprised to learn just how much those hidden items affect your health.Salt is a perfect example of an... much salt.Straight to the heartSalt is made up of two elements: sodium (钠) and chlorine (氯). When put ……
2008年11月23日
station (水电站), 48km away from his home. “How I wish I could live beside a river,” said Ma.It is the dream... of Chinese people.The area gets much of its water from underground. But using too much underground ……
2009年03月15日
A fish out of waterSituationDave: Mary, how's your English class?Mary: I feel like a fish out of water. Everyone talks in English but I can't!How to useA fish out of water从字面上解释就是"离开了水的鱼"。当我们要表示自己"和所 ……
2005年09月18日
SituationLet's go to the restaurant and pig out!Good idea! I could eat a horse!What would you like?I'd like two large pizzas, salad and iced tea.How to use1、pig out并不是“猪出来了”,而是“大吃”的意思,它是动词短语,表示“大吃 ……
2005年03月16日
A pop quiz SituationMary: You're stressed. What happened?Dave: Miss Jones, our maths teacher, gave us a pop quiz!How to useA pop quiz有时候,老师想检验一下同学们的真实水平往往会来一次突然的考试,这种事先不告诉大家的随堂小考就叫a pop quiz. 同学 ……
2005年10月09日
dismissed the charge, saying he got sick after eating too much bad sushi and drinking too much alcohol... of organic compounds that contain chlorine. They are a common byproduct in the manufacture of many ……
2004年12月17日
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