可助于慢性铅中毒的诊断为（）
A.高铁血红蛋白含量测定
B.碳氧血红蛋白含量测定
C.血中胆碱酯酶活性测定
D.白细胞数检查
E.以上都不是
参考答案：E
It was in the stone house was built as a school by local villagers the boy finished his primary
school.[ ]
A. which; that
B. that; where
C. which; where
D. that; which
避雷器带电检测项目有（）。
A.红外热像检测
B.运行中持续电流检测
C.相对电流比值
D.高频法局部放电检测
