A.-1000Hu
B.-500Hu
C.0Hu
D.+500Hu
E.+1000Hu
[单选题]空气的CT值通常是()A . -1000HuB . -500HuC . 0HuD . +500HuE . +1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是()A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu
[单选题]空气的CT值通常是A.-1000HuB.-500HuC.0HuD.+500HuE.+1000Hu