【单选题】听力原文:M: Do you mind if I take notes? W: Not at all. M: Thank you. I see that you have been an assistant manager for years, which means that you were made an assistant manager at a relatively young age...
【单选题】听力原文:M: Do you mind if I take notes? W: Not at all. M: Thank you. I see that you have been an assistant manager for four years, which means that you were made an assistant manager at a relatively youn...
【多选题】What are the characteristics of ideal analytical technique for measuring trace elements in environmental samples?
A.
The choice of analytical method for making trace element measurements of environmental or biological samples depends not only on availability but on a variety of factors: a. multi or single element determination; b. required detection or determination limits; c. required type of sample preparation;
B.
d. possible matrix or interference effects; e. total dissolved solids content; f. liquid or solids analysis; g. required levels of precision and accuracy;
C.
The ideal analytical technique for measuring trace elements in environm e ntal samples must offer: (a) very low detection limits, (b) a wide linear dynamic range, (c) simple interference–free data,
D.
(d) qualitative , semi-quantitative and quantitative analysis, (e) possible simultaneous multielement capability, (f) simple sample preparation, (g) high throughput and low cost per determination.
【单选题】听力原文:W: Can you talk about the characteristics of credit cards? M: The credit card is a plastic card carrying a line of credit ranging from several hundred to several thousand dollars or more. Q: Whic...
A.
It is a plastic card.
B.
People can lend it to others.
C.
It can carry- a line of credit ranging from several hundred to several thousand or more.
【单选题】听力原文:M: Do you mind if I take notes? W: Not at all. M: Thank you. I see that you have been an assistant manager for four years, which means that you were made an assistant manager at a relatively youn...
A.
Through what ways the woman would tackle problems.
B.
How come she became an assistant manager so young.
C.
What she would do if she refused to carry out an order.
D.
What would happen if she refused to carry out an order.