Daily Security Management Technology Question (12.6)
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1. The safety condition grades of pressure vessels are divided into ( ) grades. A. 2 B. 3 C. 4 D. 5 2. Based on the principles, characteristics, and application ranges of non-destructive testing methods, if surface defects are to be detected in the welds of a pressure vessel cylinder made of austenitic stainless steel, which testing method is appropriate to use? ( ) A. Eddy current B. Acoustic emission testing C. Magnetic particle D. Penetrant Correct answers: 1.C 2.D
This post was last edited by wzp19810708 on 2016-12-6 07:45: C, D
1.C. 4 2.D. Penetration