干扰dUMP→dTMP的抗核酸代谢物是
A. 6-巯基嘌呤
B. 氮杂丝氨酸
C. 别嘌呤醇
D. 甲氨蝶呤
男性,28岁,十二指肠球部溃疡史5年,突感上腹剧痛5小时,继之全腹痛,大汗淋漓。 查体:全腹压痛及反跳痛,似有溃疡穿孔可能。 十二指肠穿孔哪一部位较多见
A. 十二指肠球部小弯侧
B. 十二指肠球部前壁
C. 十二指肠球部后壁
D. 十二指肠降部
慢性心房颤动伴二度房室传导阻滞者,应首选的起搏器型号是
A. ICD型
B. VVI型
C. AAI型
D. VOO型
SECTION B Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. Now listen to the interview. When one is to register with the police, he has to take the following EXCEPT ______.