下列符合“守法合规”要求的做法包括( )。A．遵守法律法规 B．遵守行业自律规范 C

关于CDE，以下正确的是()

A．成像对超声入射角的相对非依赖性

B．可显示高速血流

C．可显示血流的方向

D．常出现彩色信号混叠现象

E．对平均速度为零的灌注区血流难以显示

如图所示电路中，L是自感系数足够大的线圈，它的电阻可忽略不计，D₁和D₂是两个完全相同的小灯泡。将开关K闭合，待灯泡亮度稳定后，再将开关K断开，则下列说法中正确的是(    )

A．K闭合瞬间，两灯同时亮，以后D₁熄灭，D₂变亮

B．K闭合瞬间，D₁先亮，D₂后亮，最后两灯亮度一样

C．K断开时，两灯都亮一下再慢慢熄灭

D．K断开时，D₂立即熄灭，D₁闪一下再慢慢熄灭

Welcome to Cöteborg University

Cöteborg University is one of Sweden’s largest and most popular universities.

We are very proud of this and believe that there are several reasons for our popularity. The principal reasons we believe to be the high quality of our education and research and the broad range of courses that we offer. In addition to this, Cöteborg University provides an attractive and exceptionally（格外的）high-standard study environment. Most parts of the university are situated in the city centre and this enriches city life as well as student life.

Cöteborg has a lot to offer its students: it has a rich and varied cultural life with many theatres, concerts and festivals. For those looking for outdoor life, forests and vast recreation（娱乐）areas are not far away from the city centre; the sea and the archipelago（群岛）are also within easy reach. Industry and commerce are expanding, and have a joint interest with the University in meeting the ever-changing and growing demands of society.

Cöteborg University strives（努力）to be an attractive choice for students from all over the world.

We look forward to welcoming you to Cöteborg University.

56. The main reasons for Cöteborg University’s popularity according to the passage is ______ .

A. the high quality education and research and the wide range of courses

B. the convenient traffic

C. its excellent location and fast developing economical environment

D. famous professors and friendly students

57. Which of the following statements is true?

A. The university is in the city centre.

B. The students can live outdoor.

C. The cultural life of the university is very rich.

D. The University has no interest in growing demands of society.

58. What’s the main purpose of this passage?

A. To bring fame to Cöteborg University.

B. To introduce the wonderful cultural life in Cöteborg University.

C. To declare Cöteborg University’s goal and interest.

D. To attract students all over the world to apply for Cöteborg University.

男青年腰椎骨折后走路正常，大小便失禁，应考虑（）

A.前列腺肥大

B. * * 狭窄

C.合并 * * 损伤

D.脊髓损伤

E.盆腔内血肿

3岁男孩，心前区隆起，胸骨左缘第3、4肋间闻及Ⅲ～Ⅳ级全收缩期杂音，心尖区有较短舒张期隆隆样杂音，肺动脉瓣区第2音亢进。X线示左、右心室大。诊断可能是（）

A.小型室间隔缺损

B.大型室间隔缺损

C.风湿性心脏病

D.房间隔缺损

E.动脉导管未闭