“按照能力进行选择”属于FIDIC全体成员的基本准则中的( )要求。
A.对社会和职业的责任
B.能力
C.对他人的公正
D.正直性
参考答案:C
— We don't know _____.
— It is said that he was born in Canada. [ ]
A. what he is
B. when he was born
C. where he comes from
D. if he lives here
关于再生障碍性贫血的发病机制正确的是()
A.造血干细胞中CD8T细胞明显减少
B.T辅助细胞Ⅰ型(Thl)比例增高
C.患者体内IFN-γ水平下降
D.骨髓中CD34细胞增加
E.骨髓中造血细胞减少,基质细胞正常