单选题Which of the following nondestructive testing methods can be used to detect a suspected subsurface defect in a tail-shaft liner?（）ADye penetrantBMagnetic particleCUltrasonicDAll of the above
单选题
Which of the following nondestructive testing methods can be used to detect a suspected subsurface defect in a tail-shaft liner?（）
A
Dye penetrant
B
Magnetic particle
C
Ultrasonic
D
All of the above
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