手术体位安置的原则是()
A.根据手术部位安置正确体位
B.患者舒适,安全
C.术野清晰,暴露好
D.尊重术者的习惯
E.肢体不过分外展
参考答案:A, B, C, D, E
You had a good time during the May Day holiday, _____ you? [ ]
A. hadn't
B. didn't
C. haven't
贫血的治疗原则首先是()
A.去除或纠正病因
B.使用抗贫血药物
C.刺激骨髓造血
D.使用肾上腺皮质激素
E.补充造血原料