显示器所表现亮度信号的等级差别叫做() A.窗宽 B.窗位 C.窗技术 D.CT值标

题型:单项选择题

问题:

显示器所表现亮度信号的等级差别叫做()

A.窗宽

B.窗位

C.窗技术

D.CT值标度

E.灰阶

考点:放射医学(医学高级)CTCT题库
题型:单项选择题

在△ABC中,“sin2A=sin2B”是“A=B”的(  )

A.充分不必要条件

B.必要不充分条件

C.充分必要条件

D.既不充分也不必要条件

题型:单项选择题

下列属于来自组织对变革的阻力的有( )

A.习惯及对它的依赖

B.对安全与未知的恐惧

C.结构惯性与人际关系网

D.群体惯性与组织规范

E.经济利益

题型:单项选择题

Randy Kraus was paralyzed. His left side was useless. But his right hand was (1) enough to lift a bucket to his forehead. Once, he’d been a police officer and owned a private-eye agency. Once, he’d been p and able. Now, he felt he was nothing.

His (2) started with Parkinson’s disease, but it didn’t (3) there. In July 2002, the 60 year old Kraus went into the hospital for an operation to control the shaking. (4) , during the operation, he had a stroke. He was paralyzed. The (5) man, who loved golf, could think, but couldn’t (6) . Kraus wanted the doctors to (7) it to him straight. "You may never walk again, " they told him. "Maybe you won’t (8) be able to talk. "

Once at home, he (9) he couldn’t lift a fork or take a drink by himself. Physical treatment was so painful and slow. What did he have to (10) for So now Kraus held the gun against his head. (11) the cold metal on his skin, he began to consider not his pain, but the pain he (12) cause his wife, daughters and grandchildren. He didn’t pull the trigger.

"You are where you are", his exercise physiologist, Andrew Garud told him. "The pace would be slow; the pain would be (13) . But as long as you are (14) , you have the ability to get better. " After three months of (15) with Garud, Kraus wanted to see if he could (16) . He could. Then he took three steps, sat down and cried like a baby. One step (17) to another. Next he managed a short walk. It was the hardest (18) of Kraus’s life.

Garud kept saying he could (19) more. Now, Kraus can brush his teeth, shave himself and get around the house with a walker. Little success only the paralyzed can (20) understand.

9().

A.supposed

B.observed

C.declared

D.found

题型:单项选择题

(36-38题共用题干)  女性,8岁。右上1外伤冠折,切角缺损。口腔检查:缺损处已露髓,探痛(++),叩痛(+),无松动。

治疗首选

A.直接盖髓术

B.牙髓切断术

C.拔髓术

D.根管治疗

E.塑化治疗

题型:单项选择题

PC键盘布置了83个键,内部由一块( )MPU控制,它是典型的8位单片机。

A.8255

B.8049

C.8259

D.8237

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