单选题
紫外-可见分光光度计是根据被测量物质分子对紫外-可见波段范围的单色辐射的（）来进行物质的定性的。
散射
吸收
反射
受激辐射
单选题
721型分光光度计适用于
可见光区
紫外光区
红外光区
都适用
单选题
在光学分析法中, 采用钨灯作光源的是
原子光谱
紫外光谱
可见光谱
红外光谱
单选题
分光光度计的核心部件是
光源
单色器
检测器
显示器
单选题
对吸收带不产生影响的因素是
空间位阻影响
体系的pH值
溶剂效应
温度
单选题
在光度分析中，某有色物质在某浓度下测得其透光度为T若浓度增大1倍，则透光度为
T*T
T／2
2T
T
单选题
当透光度T%＝0时，吸光度A为
1
.5
0
∞
填空题
Michael calls Mr. Xie's company to postpone their appointment. His secretary Rosemary answers the phone.
Michael: Good morning. Can I talk to Mr. Xie, please?
Rosemary: Sorry. He is in a 1 now. Is there anything I can do for you?
Michael: Well, My name is Michael. I have an appointment with Mr. Xie at about 10 o'clock tomorrow morning, but could you please 2 it to sometime next week?
Rosemary: All right. What should I tell Mr.Xie?
Michael: I have to go for an urgent business 3 tomorrow. But I will be back before the weekend. Can we make an appointment for next week?
Rosemary: Well, let me check. Mr. Xie is in next Tuesday and Wednesday. When does it 4 you?
Michael: Tuesday is good.
Rosemary: I can put you down for eleven o'clock. 9 Is that OK?
Michael: Oh, I'll have an 5 that time. How about 3 o'clock in the afternoon?
Rosemary: All right.
Michael: Thanks. Please tell Mr. Xie that I am sorry for the inconvenience. Thank you very much.
Rosemary: You are welcome.
匹配题
听了我们的对话，请回想一下，对话中我是如何应答的。
What is the first thing Lucy would consider when buying a car?
- She would consider the price first.
Why will Lucy pay attention to the fuel consumption of the car?
Why would Lucy rather choose a smaller car?
Why are some environmentally-friendly cars expensive?
单选题
What is the first thing Lucy would consider when buying a car?
- She would consider the price first.