CT扫描可改善空间分辨力的方法是() A.毫安从150mA加到350mA B.成像矩

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问题:

CT扫描可改善空间分辨力的方法是()

A.毫安从150mA加到350mA

B.成像矩阵从256×256增加到512×512

C.重建层厚从5mm增加到10mm

D.扫描时间从1s增加至2s

E.增加千伏至140kV

考点:大型设备上岗证考试全国医用设备使用人员考试宝典(CT技师)全国医用设备使用人员考试宝典(CT技师)模拟试题三
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“嫦娥奔月”表达的美好理想,经过人们千百年的努力,在现代生产力和科学技术高度发展的今天,通过“嫦娥一号”探月活动的成功正在成为现实。从哲学认识论的角度看,这表明 [ ]

①社会实践是科学理论发展的动力 ②认识能力的提高是实践成功的首要因素 ③实践活动具有社会历史性④正确的认识是实践成功的决定因素

A.①②

B.②③

C.①③

D.①④

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对诊断系统性红斑狼疮最有意义的检查是()

A.免疫球蛋白测定

B.抗核抗体

C.总补体溶血活力测定

D.E玫瑰花试验

E.淋巴细胞转化试验

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On a summer day, John was sitting on a beach in Hawaii with his parents. The six-year-old child suddenly said he was so lucky because he had so many toys to play with at home.

His surprised parents replied that he was lucky, since a lot of kids didn’t have any toys at all. “How can that be?” John said, confused, but then he said that he would like to get toys for those children. His parents naturally thought their son was just kidding. But as soon as they returned home, John began using his pocket money to buy toys for other kids and asking his friends to do the same. His parents responded by organizing pizza suppers for other families interested in helping other children that can’t afford to buy toys. John thought that he just wanted to cheer those kids up.

John’s parents started to find a place that would allow children as young as six and seven to volunteer. They finally find a day care center for disabled children to let John and his friends visit. They went and played with these kids, playing around the room as if they belonged there.

John and his friends named their work Kids Cheering Kids. John and his friends visited kids at some childcare centers, helping out with a party they organized. They also prepared a performance for children with disabilities. Their activities have drawn public concern.

The spirit of helping is as fresh as it was that day in Hawaii. “The whole purpose,”

John says, “is to make the kids feel better.”

小题1:Why did John get toys for the children who didn’t have any toy at all?

A.Because he wanted to make them happy.

B.Because he wanted to show off his toys.

C.Because he wanted to share his toys with them.

D.Because he wanted to make friends with them.小题2:What was John’s parents’ attitude towards his plan?

A.Positive.

B.Critical.

C.Doubtful.

D.Puzzled.小题3:What do we learn about Kids Cheering Kids?

A.It’s a children’s game enjoyed by John and his friends.

B.It’s a project started by John to help other kids.

C.It’s a program performed by John and his friends.

D.It’s an after-school activity planned by John’s friends.小题4:What would be the best title for the passage?

A.An unforgettable vacation

B.A valuable experience

C.Let kids cheer kids

D.Let kids learn to share

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其他冻藏猪肉

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冲压加工的三要素不包括以下哪一个?()

A.冲床

B.模具

C.原材料

D.压力

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