内消旋体和外消旋体旋光度都等于零，但是其实质是不一样的 A、正确 B、错误 - 查题网

>> 成人高等教育 / 有机化学

成人高等教育 / 有机化学

正确率：100%

内消旋体和外消旋体旋光度都等于零，但是其实质是不一样的

A、正确
B、错误

积分

有机化学

参考答案：

点击查看答案

佳题速递：

下列选项中不正确的观点是（）中国特色社会主义理论

工业三大要素是指（）、能量和信息。机电一体化系统设计

白烧是运用不同的原料、调味品，达到白烧的效果烹饪工艺学

名词解释可变资本马克思主义基本原理概论

水污染的危害是多方面的，关系到人类生存和发展，其主要表现不包括：（）A、危害人体健康 B、侵害心理健康 C、影响工业生产 D、影响渔业生产环境法

题型描述: 阅读理解A credit card is basically a plastic card with a magnetic strip（磁条） invented with the intention to simplify the complicated banking process for an individual in case he/she is short of cash. Many people don’t like to carry much cash. For them the cards are convenient and safe to use.Credit cards are gaining popularity, even for buying small items. They are accepted almost everywhere, though not at fast food restaurants.A credit card enables the cardholder to buy things now and pay for them later. The cardholders get credit by promising to pay in the future for something they receive in the present. When the cardholder uses a credit card, the credit card company that issued the credit card pays the store. Later, a bill will be mailed to the cardholder by the credit card company for the amount he/she purchased. And finally, the cardholder then repays the company for the entire credit amount that he/she has used, by paying it back fully or through regular monthly payments. In case the cardholder fails to payback the entire balance, the bank can lawfully charge him/her with an interest fee on the unpaid amount. (193 words)1、 Which of the following can be true of the credit card? A. Both A and B. B. People using credit cards are never discredited. C. It allows the cardholder to buy things without cash. D. It is a plastic card. 2、 Why are the credit cards so popular? A. They are accepted in many places and can be used to buy both large and small items. B. Many people like to carry both credit cards and a lot of cash. C. Both A and B D. They are easy to carry though not very safe. 3、 What is the advantage of a credit card? A. The credit card is accepted in fast food restaurants. B. Since the credit card company sometimes pays the store, the cardholders do not have to pay at all. C. The more the cardholder buys, the better his/her credit is. D. When the cardholder does not have the money, he/she can still buy things. 4、 9. When a cardholder receives a bill from his/her credit card company, how can he/she repay immediately? A. A small part of the bill. B. Any of the above. C. In full. D. By half. 5、 What may happen if the cardholder fails to pay back the entire balance? A. The cardholder must pay the interest fee. B. The cardholder pays double the amount of the original bill. C. The cardholder has to register with the credit card company again. D. The credit card will become useless.统考英语B