SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文: Now I'd like to talk to you about the final exam. The exam will be held next Thursday, the last day of the exam week. Remember to bring along two or three pens in case one is out of ink. Unlike the mid-term exam, this test will not include multiple-choice questions. It will consist entirely of essay questions you will have to answer three of the five questions the exam will be comprehensive which means. you will be responsible for all of the subject matters we' ve covered in class. I would suggest you review your mid-term questions as well as the text book and your calls notes the final will count for 50% of your grade in the course; the research project will count for 20%; and the mid-term 30%.
I will be in my office almost all day on Tuesday of next week. If you run into any problems, please feel free to stop in. good luck. I'll see you on Thursday.
when will the exam take place?
A. On Tuesday
B. On Wednesday
C. On Thursday
D. On Friday
下列关于不同职业接触限值时的采样的说法中,其中正确的是()。A.职业接触限值为最高容许浓度的有下列关于不同职业接触限值时的采样的说法中,其中正确的是()。
A. 职业接触限值为最高容许浓度的有害物质,采用定点的采样方法,采样时间大于15min
B. 职业接触限值为最高容许浓度的有害物质,采用个体的采样方法,采样时间大于15min
C. 职业接触限值为最高容许浓度的有害物质,采用定点的采样方法,采样时间小于15min
D. 职业接触限值为时间加权平均容许浓度的有害物质,应根据工作场所空气中有害物质浓度的形式,应当全面分析综合考虑有害物质浓度的存在状况,或采样仪器的操作性能,选择个体采样或定点采样,长时间采样或短时间采样方法。但以个体采样和长时间采样方法为主
E. 职业接触限值为短时间接触容许浓度的有害物质,采用定点的采样方法,采样时间大于15min
全寿命费用分析法是常用的设计方案技术经济评价的方法之一,下面不属于全寿命费用分析法的是()。
A. 最大费用法
B. 最小费用法
C. 费用现值法
D. 费用年值法