第12题: [单项选择]上述显像剂中最适合于淋巴引流观察的是 A. 99mTc-ASC B. 99mTc-PYP C. 99mTc-HAS D. 99mTc-MDP E. 99mTc-DX 参考答案:E 答案解析:4.由于99mTc-ASC颗粒大小合适、稳定性好、淋巴结摄取率高等特点,更适合于前哨淋巴结定位。5.由于99mTc-DX移行速度快,特别适合淋巴引流观察。
A. Because it can speed up the sending of messages. B. Because it is a fashionable gadget to the businessman. C. Because it is cheap and efficient. D. Because it is a part of business life. 参考答案:C 答案解析:参见文章第1段的第1行:International electronic mail systems are no longer the plaything of hackers.(国际电子邮件系统不再