一般把继电保护的()称为继电保护的整定计算。
A.动作值的计算
B.动作时间的计算
C.继电器选择
D.灵敏度的校验
参考答案:A, B, D
原发性肝癌的腹腔积液AFP值常为()
A.AFP>20μg/L
B.AFP<20μg/L
C.AFP>25μg/L
D.AFP<25μg/L
E.AFP处于20~40μg/L
______ that Mr. Thomson got such rare fishes
A. When and where was itB. When and where it wasC. Was it when and whereD. When and where Were it