题干

下列实验操作或处理事故的方法正确的是(  )

A:用干燥的pH试纸测定NaClO溶液的pH

B:在耐高温的石英坩埚中进行熔化氢氧化钠固体的实验

C:用分液漏斗分离溴苯和水的混合物时,溴苯从下口放出,水从上口倒出

D:欲配制质量分数为10%的硫酸铜溶液,可准确称取10 g硫酸铜晶体溶于90 g水中

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答案(点此获取答案解析)

C

同类题5

    The right name is important in the business world. All you have to do is think of the names for some of the products you buy every day and you'll agree that the name and the product are connected in the everyone's mind.
    In many countries, successful trade or brand names are protected by law. This is so that other companies cannot make a product and, in fact, be buying something different. Businesses register a company or a product name with the government. In fact, more than 1,000 product and company names are registered every hour. Many companies spend a lot of money to find the right name for their products. A good example of this is. In the car industry. Some successful names for cars have powerful associations (联系).The Ford Mustang and the Jaguar are only two examples of choosing the names of animals that are fast and strong.
    When a U. S company decides to sell its product in another country, it has to make sure that the product name translates properly. When Coca-Cola introduced its soft drink to China, it looked for the right name. It wanted a name that would do two things. One was to present its image(形象)in Chinese and the second was to be close to its first brand name—Coke. It took some efforts before finding the right word —which sounds similar and translates as “happiness in the mouth”. Asian company names are not new to the United States. The brand names of Samsung and Sony have been successful. Finding the right brand name is a big business. Asian companies that sell to foreign markets pay to find a name that will connect with its customers. There are even naming companies that specialize in inventing product names. These companies can charge (要价)up to $100,000 a word for their creations. But it’s worth it. Successful companies know how important the right brand names are for their development.