骨关节炎（）
A.老年人初发单关节炎，尤其膝受累时，白天活动多加重，X线示膝关节有骨赘形成，骨缘唇样变及关节间隙狭窄，关节无强直
B.中年初发膝关节疼痛剧烈，发热和压痛伴运动受限
C.中年突发脚踝关节或脚趾，手臂、手指关节处疼痛、肿胀、发红，伴有剧烈疼痛。显微镜下发现患处组织内有松针状尿酸盐沉淀
D.老年人初发单关节炎，尤其膝受累时，关节液检查可见有焦磷酸盐结晶，X线检查有软骨钙化
E.中年初发掌指、腕、近端指间关节痛，并有晨僵、类风湿因子阳性，软组织肿胀，骨质疏松
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关于CT伪影的叙述，错误的是：（）
A.伪影在扫描和信息处理过程中产生
B.数据采集系统故障可产生伪影
C.探测器的取样频率与伪影无关
D.缩短扫描时间可减少运动伪影
E.严格控制机房工作环境可减少伪影
In the winter vocation of 2008, I was fixed with a job. I worked as a(n) 21 at Mr Breen’s fruit shop. The fruit shop did good business. Most of the trade came from the housewives who lived in the neighborhood, 22_ he also had regular customers who arrived outside the shop in cars. Mr Breen 23 them all by names and they sometimes even had their order already made up, always 24 me to carry it out to their car. They were clearly longstanding customers, and I 25 they must have stayed faithful to him because he had promised to sell good quality fruits. He had a way with them---- I had to 26 that. He called every woman “madam” for a start, 27 those who clearly were not, but when he said it, it did not sound like flattery(恭维). It just sounded 28 in an old-fashioned way. He was a great chatter 29 . If he did not know them, he would greet them with a few 30 about the weather, 31 he did, he would ask about their families or make 32 , always cutting his cloth 33 his customers. Whatever their bills came to, he 34 gave them back the few odd pence(零钱), and I was sure they thought he was very generous. But I thought he was the opposite. He never threw anything away. He was always looking for 35 for nothing.
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行政法的渊源主要有宪法、法律、行政法规、地方性法规、( )。
A．部门规章
B．国际条约
C．法律解释
D．自治条例
色彩有膨胀与收缩的视觉感受，所以可以利用色彩的错觉，来弥补身材的不足。（）
简述织物组织、密度。