下列不是缺铁性贫血原因的是() ["多次妊娠和哺乳的妇女","长期偏食","慢性失血","药物或毒物的作用","发育中的婴儿和青少年"]
铁路运输分整车、零担,集装箱三种货运方式。
HbBarts见于下列哪种疾病() ["HbC病","α珠蛋白生成障碍性贫血","β珠蛋白生成障碍性贫血","HbS病","HbE病"]
增加助燃气流速,会使雾化率()。 ["A.下降","B.提高","C.不变","D.难以确定"]
成人静息状态下,有氧代谢产生CO量最接近() ["100ml/min","130ml/min","160ml/min","180ml/min","200ml/min"]
无线发射系统的连接方法?