第十二章单元测试
- The unit of radiation exposure is （ ）
- Which of the following is true （ ）
- The period of gestation when the foetus is most susceptible to radiation anomalies （ ）
- All are radiation protection devices except （ ）
- All include measures of reducing radiation exposure in the radiology department （ ）
A:Rad B:Rem C:None of them D:Roentgen
答案:Roentgen
A:1 Gy = 1000 rads B:1 Gy = 100 rads C:1 Gy = 1000 rems D:1 Gy = 100 rems
A:1-7 wks B:8-15 wks C:16-24 wks D:25-32 wks
A:Lead gloves B:Film badges C:Thyroid shield D:Lead goggles
A:Reducing the exposure factors B:Wearing the TLD C:Increaseing the distance D:Shidlding
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