南车员工在生产作业过程中，对自己所从事的工作安全负（）责任
A、主要
B、次要
C、直接
参考答案：C
缺铁性贫血（ ）
A．贫血、网织红细胞20％，Coombs试验(+)
B．贫血、黄疸，Ham试验(+)
C．贫血、网织红细胞减少，骨髓巨核细胞减少
D．贫血、红细胞体积小，成熟红细胞苍白区扩大
E．贫血、红细胞体积正常，末梢血原始粒细胞>40％
Which client has the highest risk of ovarian cancer ？（）
A．30-year-old woman taking oral contraceptive pills.
B．45-year-old woman who has never been pregnant.
C．40-year-old woman with three children.
D．36-year-old woman who had her first child at age 22.
