问题 单项选择题 共用题干题

患者接受苯妥英钠2个试验,给药速率分别为100mg/d和300mg/d,测得的相应稳态血药浓度分别为3.7g/ml和47g/ml,苯妥英钠中含91.7%的苯妥英。

米氏常数(Km)值是()

A.5.1

B.6.3

C.7.5

D.8.6

E.9.7

F.10.4

答案

参考答案:E

选择题
阅读理解

When you buy a T-shirt, or a fur coat in a store , it often carries a label(标签) telling who made it or from what store it was bought. Indeed, some labels show the dress is famous and it is very expensive, so buyers who deal with the cheapest products would be pleased to do away with labels entirely.

However, there is another label more important than the one showing from which store the dress was bought. When a person buys a fur coat, or a jacket , from a store , a label telling what the product is made of should be carried to it.

This label is required by law. Besides telling what the product on show is made of , the label should be in clear English and be where one can find it easily. The information on the label must be the truth.

The reason for this label is that most buyers today aren’t expert enough to know exactly what kind of fur or material they are buying. The buyer must believe in the store that sells the products or in what the labels say.

小题1:The author doesn’t agree that_______.

A.some clothes may carry more than one label

B.some clothing stores sell cheap dresses

C.shops can sell products with or without labels

D.buyers will believe what the label says小题2:This article mainly refers to__________.

A.making furs and clothes

B.protecting buyers with law

C.keeping the buyers informed

D.businessmen and sellers小题3:Which of the following is true?

A.Not all buyers know the materials they are buying.

B.A fur coat with a high price often carries a false label.

C.A label only says what material the product is made of .

D.A T-shirt seldom carries a label.