课程名称︰作业环境测定二 课程性质︰选修 课程教师︰黄耀辉 开课学院：公卫学院 开课系所︰职卫所 考试日期（年月日）︰2013.05.29 考试时限（分钟）：100 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 1. Please list the measurement units for radioactivity. radiation exposure, absorbed dose, and equivalent dose, respectively. Whar are the relationships among absorbed dose, equivalent and effective dose. (10%) 2. Please briefly describe the basic types for ionizing radiation exposure monitoring? Please also describe the basic types of radiation detectors. Use two of them as examples to illustrate the mechanisms for radiation detection.(20%) 3. Please introduce the system of dose limits(剂量限度体系) for ionizing radiation exposure? What dose Annual Limit of Intake mean? How is it defined? (10%) 4. Please briefly describe relative biological effect(RBE) and linear energy transfer(LET), respectively. What is the relationship between them? (10%) 5. Please tell the differences among subradiofrequency, radiofrequency/micro- wave, and optical radiation, in terms of frequency, energy, application, health concerns. (15%) 6. What do far-field and near-field mean? What are their roles in the electric and magnetic field measurement? (10%) 7. What precautions should be taken when conducting a measurement for sub- radiofrequency field strength? (in terms of measurement type, measurement units, measurement tools and procedures) (10%) 8. In laser exposure standard setting, what principal parameters associated with laser hazard severity should be considered? In the ACGIH TLVs for visible and near IR, there is a category with wavelength weighting in term of aphakic hazard function. What does it mean and what is it for? (15%) --

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