[单项选择]下列属小细胞低色素性贫血的是()。 A. MCV82fl,MCH29pg,MCHC://355g/L B. MCV81fl,MCH33pg,MCHC://420g/L C. MCV80fl,MCH33pg,MCHC://410g/L D. MCV75fl,MCH25pg,MCHC://350g/L E. MCV70fl,MCH21pg,MCHC://300g/L
第8题: [单项选择]下列有关肠瘘病因、病理生理的描述不当的是() A. 常见病因是肠管的病变和创伤 B. 先天性肠瘘较少见 C. 高位肠瘘时水、电解质紊乱较严重 D. 高位肠瘘时继发感染明显 E. 低位肠瘘时很少引起严重的生理代谢紊乱 参考答案:D 答案解析:肠瘘的常见病因是肠管的病变和创伤,先天性肠瘘较少见。高位肠瘘时水、电解质的丢失和紊乱较严重,可发生脱水和低血容量性休克。低位肠瘘继发感染明显,而水、电解质的丢失较少,很少引起严重的全身生理代谢紊乱。肠
第10题: [单项选择]A user reports that after configuring the BIOS to boot to the hard drive first, the system still tries to boot from the optical drive. Which of the following is the MOST likely cause?() A. Optical drive B. Power supply C. CMOS battery D. CD-ROM disk 参考答案:C