The FBI (Federal Bureau of Investigation) had found a new way to catch criminals by looking at their jeans. Scientists from the bureau reported at last weeks meeting of the American academy of Forensic Sciences in San Francisco that every pair of blue jeans has a unique wear pattern. The FBI has already used this "bar code "to place a suspect at the scene of a crime.
Richard Vorder Bruegge, a scientist at the FBI laboratory in Washington D. C. , and his colleagues developed the technique while helping to identify suspects who were robbing banks and setting off bombs ii1 Washington In April 1996, one of the gang was caught on film . He was wearing a mask, but part of his trousers was visible.
When the photograph was enlarged Vorder Bruegge noticed light and dark lines running across the seam of the man' s jeans. His team found that the pattern originated from slight imperfections introduced when the trousers were made. Workers sew the seams by pushing the fabric through a machine, and the irregularity of that motion stretches and binds the fabric . The colored layer of cotton in the raised portion is worn away, creating white bands.
The patches are more striking on jeans than other types of trousers because they are often al- lowed to become extremely worn, "People just keep wearing them, "says Vorder Bruegge.
The FBI analyzed the jeans of suspects in the Washington case. One pair had a pattern with over two dozen features that matched the jeans Vorder Bruegge's team photographed. At the tri- al, the defense called in a used jeans exporter as an expert witness who claimed the patterns were common to all jeans. He showed the court 34 similar pairs, but in each case the FBI could distinguish them from the accused . The suspect was convicted.
"To place a suspect at the scene of a crime" at the end of the first paragraph means that theFBI
A.has been able to prove a suspect guilty
B.will lead a suspect to the spot of a crime
C.were at the scene with the suspect.
D.caught the suspect on the spot
第1题
A.超选择插管,微导管给药
B.灌注时间可维持24~48小时
C.对结肠出血,比栓塞法更安全
D.对骨盆外伤性出血疗效好
E.对十二指肠溃疡出血疗效好
第2题
A.肾上腺素常用于肾动脉、肾上腺动脉和肾静脉造影
B.加压素既用于诊断性药物血管造影,又用于治疗胃肠道出血
C.加压素多用于腹腔动脉和肝动脉造影
D.加压素的收缩血管力较血管紧张素强,但作用时间短
E.造影用剂量的血管紧张素副作用不明显
第3题
经导管灌注加压素治疗消化道出血,一般首先给药的速度为
A、0.1U/min
B、0.2U/min
C、0.3U/min
D、0.4U/min
E、0.5U/min
第4题
有关髂内动脉介入化疗技术在恶性滋养细胞肿瘤治疗中的应用下列哪项不正确
A.控制肿瘤破裂出血
B.阻断肿瘤血供,导致肿瘤坏死
C.栓塞剂含有抗癌物质起缓释药物的作用
D.对有较大盆腔动静脉瘘的患者行栓塞,不可能导致肺栓塞
E.对绒癌耐药患者可采用超选择性动脉插管持续灌注合并全身静脉用药
第5题
关于血管内栓塞治疗消化道出血,叙述错误的是:()
A.胃切除术后的出血对输注加压素无反应,应积极采取栓塞治疗
B.胃溃疡出血的决定性治疗是手术
C.急性出血性胃炎的首选治疗措施是选择性动脉内滴注血管加压素
D.栓塞术对治疗Wallory-Werss撕裂综合征出血比滴注加压素更有效
E.明胶海绵是最常选用的栓塞材料
第6题
关于血管内栓塞治疗消化道出血,叙述不正确的是
A、胃切除术后的出血对输注加压素无反应,应积极采取栓塞治疗
B、胃溃疡出血的决定性治疗是手术
C、急性出血性胃炎的首选治疗措施是选择性动脉内滴注血管加压素
D、栓塞术对治疗Mallory-Weiss综合征出血比滴注加压素更有效
E、吸收性明胶海绵是最常选用的栓塞材料
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