试题与答案

当过冷液体中出现一个半径为r的晶胚时,所得的临界晶核半径大小为()。r*变小意味着形

题型:填空题

题目:

当过冷液体中出现一个半径为r的晶胚时,所得的临界晶核半径大小为()。r*变小意味着形核数目(),晶核均匀形核依靠()提供r>r*的原子小集团充当晶核,依靠()提供相当于界面能()的形核功。

答案:

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参考答案:A解析: 产成品评估值=[100×120×(60%×1.+2+40%×1.0)]元=13440元。

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题型:阅读理解

Some British and American people like to invite friends for a meal at home. You should not be upset if your English friends don't invite you home. It doesn't mean they don't like you! Dinner parties usually start between 7 and 8 p.m., And end at about 11. Ask your hosts what time you should arrive. It's polite to bring flowers, chocolates or a bottle of wine as gift. Usually the evening starts with drinks and snacks. Do you want to be extra polite? Say how much you like the room, or the pictures on the wall. But remember---- it's not polite to ask how much things cost. In many families, the husband sits at one end of the table and the wife sits at the other end. They eat with their guests.

You'll probably start meal with soup or something small, and then you have meat of fish with vegetables, and then desert, followed by coffee. It's polite to finish everything on your plate and have more if you want it. Did you enjoy the evening? Call your host and hostess the next day, or write them a short "thank you" letter. British and American people like to say "thank you, thank you, thank you" all the time!

小题1:You're not invited to the evening by a friend, which              .

A.means you are not welcome f or some bad manners

B.means he or she doesn't like you for some unknown reasons

C.means you should pay more visits to them and bring more gifts

D.doesn't mean he or she doesn't like you小题2:You should never              .

A.say you like the host's house very much

B.ask the host the price of the things in the house

C.have drinks and some snacks before the evening

D.sit beside the host or hostess when having dinner小题3:As a guest, you should finish everything to show              .

A.you are healthy

B.you rea lly like the food

C.you like cooking

D.you have a good appetite.(胃口)

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