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固体物料粉碎前粒径与粉碎后粒径的比值称为
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Text 1 In England recently three foreign gentlemen approached a bus stop. They studied the information on the sign attached to the concrete post and decided which bus to take. About five minutes later the bus they wanted came along. They prepared to board it. Suddenly there was a clamor behind them. People rushed onto the bus and tried to push them out of the way. Someone shouted insulting remarks about foreigners. The bus conductor came rushing down the stairs to see what all the trouble was about. The three foreign gentlemen looked puzzled and embarrassed. No one had told them about the British custom of queuing for a bus so that the first person who arrived at a bus stop is the first person to get on the bus. Learning the language of a country isn’t enough. If you want to ensure a pleasant visit, find out as much as possible about the manners and customs of your hosts. You will probably be surprised just how different they can be from your own. A visitor to India would do well to remember that people there consider it impolite to use the left hand for passing food at table. The left hand is supposed to be used for washing yourself. Also in India, you might see a man apparently shaking his head at another and assume that he is disagreeing. But in many parts of India a rotating movement of the head is a gesture that signifies agreement or acceptance. Nodding your head when offered a drink in Bulgaria is likely to leave you thirsty. In that country you shake your head to signify "yes" pa nod indicates "no". Arabs are known for their sumptuous hospitality. At a meal in countries on the Arabian Peninsula, you will find that any drinking vessel is repeatedly refilled as soon as you drain it. The way to indicate that you have had enough is to take the cup or glass in your hand and give it a little shake from side to side or place your hand over the top. In Europe it is quite usual to cross your lags when sitting talking to someone even at an important meeting. Doing this when meeting an important person in Thailand, however, could cause offence. It is considered too informal an attitude for such an occasion. Also when in Thailand avoid touching the head of an adult -- it’s just not done. What must you do if you wish to ensure a pleasant visit to a foreign country
如果某一年不增发新股，且经营效率与财务政策与上年相同，则本年的实际增长率等于本年可持续增长宰。 ( )
液体制剂按分散相大小可分为
乳剂中分散的乳滴聚集形成疏松的聚集体，经振摇即能恢复成均匀乳剂的现象，称为乳剂的是
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