Why was slave labor so important to the Southern economy?
A. Southerners were not used to working.
B. Workers were needed for large-scale farming.
C. Workers were needed for the many factories.
D. Slave labor freed the upper class to work at their white collar jobs.
查看答案
贫血时病人皮肤及粘膜苍白,较为可靠的检查部位是
A. 面颊皮肤及上腭粘膜
B. 手背皮肤
C. 耳廓皮肤
D. 颈部皮肤及舌面
E. 睑结膜及口唇
慢性再生障碍性贫血病人首发的表现是
A. 贫血
B. 皮肤黏膜出血
C. 子宫出血
D. 呼吸道感染
E. 脑出血
重型再生障碍性贫血病人死亡的主要原因是
A. 皮肤黏膜出血
B. 脑出血和严重感染
C. 败血症
D. 皮肤感染
E. 肺部感染
患儿女性,5岁,疑为营养性缺铁性贫血来门诊检查。请问此患儿的血象表现是
A. 血红蛋白减少为主
B. 红细胞减少为主
C. 白细胞减少为主
D. 中性粒细胞降低为主
E. 嗜酸性粒细胞升高为主
微信支付 
支付宝支付