颈动脉体瘤的增强特点()
A.早期明显增强,但低于或接近大动脉,停止注射后瘤内造影剂存留时间较动脉长
B.稍有增强
C.明显增强,同血管一致
D.不均匀增强
E.不增强
参考答案:A
用完整的句子回答下列问题。
1. Can you play the violin?
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2. Do you like English or maths? Why?
3. What sports do you like?
4. When did you start to learn English?
5. What are you going to do this summer vacation?
舒张压的高低主要反映()。
A.心率快慢
B.外周阻力大小
C.每搏输出量大
D.大动脉弹性
E.血量多少