有一台数字温度显示仪,其测量范围为0~1000℃,其允许误差为0.5%1个字,则该表的最大误差不得超过()。
A.5℃;
B.1℃;
C.4℃;
D.6℃。
参考答案:D
—Who helped you mend the kitchen fan yesterday?
—_______. I mended it all by myself. [ ]
A. Somebody
B. Nobody
C. Anybody
遗传性球形红细胞增多症()
A.红细胞脆性增加
B.红细胞脆性降低
C.红细胞酶缺陷
D.血清铁蛋白减少
E.Coomb’s试验