类风湿关节炎的主要诊断依据是
A.皮下结节
B.类风湿因子阳性
C.双手晨僵、小关节肿胀8个月,双膝关节肿痛6个月
D.双手X线平片见骨质疏松
E.关节液纤维蛋白凝固力差
参考答案:B
By the time Mr Wang returned home from Beijing, his son's wedding _______.
A.ended
B.has ended
C.had been ending
D.had ended
口服后可减少青霉素排泄,增强药效的是( )
A.氢氯噻嗪B.丙磺舒C.碳酸氢钠D.哌替啶E.洋地黄苷