第12题: [单项选择]不符合缺铁性贫血的是( ) A. 铁蛋白<12μg/L B. 血清转铁蛋白饱和度<15% C. 红细胞苍白区扩大 D. 血清总铁结合力减低 E. 血清铁减低 参考答案:D 答案解析:[解析] 血清中总转铁蛋白能与铁结合的能力称为血清总铁结合力(TIBC),TIBC增高多见于缺铁性贫血。
第15题: [多项选择]开关箱中的漏电断路器在正常情况下可用于( )。 A. 电源隔离 B. 频繁通、断电路 C. 电路的过载保护 D. 电路的短路保护 E. 电路的漏电保护 参考答案:C,D,E
第16题: [单项选择]Questions 12 to 15 are based on the conversation you have just heard. A. Since he found a girlfriend B. Since he took to heavy smoking. C. Since he began to exercise regularly D. Since he started to live on his own. 参考答案:B