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问题 单项选择题 A型题

放射防护的三项基本原则是（）

A.放射实践的正当化、防护效果的最佳化以及个人剂量限值

B.放射实践的正当化、放射防护的最优化以及个人剂量限值

C.放射实践的法制化、防护效果的最佳化以及个人剂量限值

D.放射实践的正当化、放射防护的最优化以及公众剂量限值

E.放射实践的法制化、放射防护的最优化以及个人剂量限值

答案

参考答案：B

单项选择题

任何单位或者个人开展诊疗活动，必须依法取得

A．《设置医疗机构批准书》

B．《设置医疗机构备案回执》

C．《医疗机构执业许可证》

D．《医疗机构校验申请书》

E．《医疗机构申请变更登记注册书》
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单项选择题

The trip to the Mystery Caves will take place on Sunday, 27 July. You can book your tickets in Room 188 between 2:30 p.m. and 4:00 p.m. every day. Your parents should confirm (确认) the booking by writing to us as soon as possible. You should pay for the trip before 21 July. If we do not receive your money early enough, your booking will be cancelled(取消). If the trip does not take place for any reason, your money will be paid back.
We are planning to meet outside the railway station on Black Street at 8:00 a.m. It will take us about 2 hours to get to the center of the town by train, and from there we have to catch a bus. It will take another hour to get to the Mystery Caves on the bus.
We will spend about 1 hour and a half visiting the caves (山洞), and we hope to catch the 1:30 bus to Happy Lake for some swimming. If we are late, we will have to take the 3:00 bus straight back to Black Street.

If the trip to the Mystery Caves is cancelled, you will
[A] get your money back
[B] go there on another day
[C] go to Happy Lake instead
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