Who is ______ ? Is ______ your sister? [ ]
A. that; he
B. that; she
C. he; she
答案:B
20cm水模中心测得的CT值标准偏差范围应是()
A.2~3HU
B.2~7HU
C.7~12HU
D.12~18HU
E.19~301HU
丙磺舒与青霉素合用使抗菌活性增强的原因为()
A.减慢前者排泄
B.减慢后者代谢
C.增加后者吸收
D.竞争血浆蛋白
E.竞争肾小管分泌