问题 单项选择题

当量剂量是不同辐射类型对组织或器官形成辐射危害的度量,但是不同组织或器官即使当量剂量相同,由于它们对辐射的敏感程度不同,其产生的生物学效应也可能完全不同。因此,在辐射防护领域中有必要引入一个反映辐射对生物体损害的辐射量来描述辐射所产生的“损害效应”的大小。

关于解剖学方位,以下错误的是()

A.仰卧时,腹侧为上

B.近正中矢状面为内侧

C.近身体腹面为腹侧

D.远心脏端为远端

E.近足侧为下

答案

参考答案:A

解析:

在X线摄影中,无论患者处于何种体位或者动作,均应以解剖学姿势为定位依据。因此,仰卧时,也是近头侧为上。7.将人体纵切为左右两部分的切面为矢状面,其中,将人体纵切为左右两等份的切面为正中矢状面。

单项选择题
阅读理解

阅读理解。

      ARLANDA, Sweden (Reuters Life!)-Many people hate the idea of having to sleep on a plane. But Swedish

entrepreneur Oscar Dios thinks they can be persuaded otherwise and he has created a new kind of hostel to

prove it. 

      Dios says it is the world's first jumbo (unusually large) jet hostel, an actual jet-plane at Sweden's main

airport outside Stockholm which has been changed into a 25-room guesthouse that sleeps as many as 72

people.

      "I learned about this plane that was standing deserted at Arlanda airport and I've been trying the concept

of hostels in many different houses and buildings," he told Reuters ."I thought, 'Why not a plane?'"

      Jumbo Hostels opened for business on Thursday, giving customers the chance to check in and sleep in a

room that can best be described as comfortable."

      "The most challenging part with this project is trying to build something inside a metal hull (壳)-it's just

really, really tight."

      The jet, which was originally produced for Singapore Airlines, was taken out of service in 2002. It is held

on a concrete foundation with the landing gear secured in steel cradles.

      One feature of the hostel is its price-a room starts at 350 Swedish crowns (about $ 41), which is a lot less

than hotel rooms outside of major airports.

      Another feature is that customers can get married on the wing of the plane and stay in the plane's more

luxurious honeymoon suite (套房).

      Instead of walking down the aisle in the church, lovebirds can take what Jumbo Hostels calls the "wing

walk," where they can be joined in great happiness at the wing tip. The hostel has someone ready to perform

the ceremony.

      But in some respects this hostel remains a plane-most customers have to share the jet's nine bathrooms

and the staff only wear air host and hostess outfits. The only room that has its own bathroom is the

honeymoon suite.

1. One of the features of the plane hostel is that _____. [ ]

A. customers can sleep in comfortable rooms

B. air hostesses can offer good service

C. a wedding ceremony can be held on the wing

D. the staff can have a"wing walk"

2. We can learn from the text that _____. [ ]

A. the hostel lies at Arlanda airport in Stockholm

B. the jet plane was out of use for over six years

C. the hostel provides nine bathrooms for customers

D. every hostel room is $ 41 per night

3. The underlined word "tight" means _____. [ ]

A. crowded

B. tense

C. small

D. full

4. The purpose of the passage is to _____. [ ]

A. introduce a new kind of hostel

B. describe a wonderful place for weddings

C. prove people can sleep on a plane

D. call on people to make use of the deserted things