2025年无损检测资格证考试无损检测英语写作中级试卷
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一、单项选择题
要求：从每个选项中选择一个最符合题意的答案。
1.WhichofthefollowingisNOTacommontypeofultrasonictestingequipment?
A.Pulse-echo
B.Phased-array
C.Eddycurrent
D.Acousticemission
2.Intheprocessofultrasonictesting,thesignal-to-noiseratio(SNR)iscrucialforthedetectionofdefects.WhichofthefollowingstatementsaboutSNRiscorrect?
A.AhigherSNRindicatesabetterdetectioncapability.
B.AlowerSNRispreferablefordetectingsmalldefects.
C.SNRisonlyimportantwhenthedefectsizeislargerthanthewavelength.
D.TheSNRisinverselyproportionaltothedefectsize.
3.Whichofthefollowingisacommonmethodusedtocalibrateanultrasonictestingsystem?
A.Referenceblocks
B.Calibrationstandards
C.Signalgenerators
D.Echotimemeasurement
4.Inthefieldofeddycurrenttesting,thetermskindepthrefersto:
A.Thedepthatwhichthemagneticfieldiszero.
B.Thedepthatwhichthecurrentdensityiszero.
C.Thedepthatwhichtheinducedvoltageiszero.
D.Thedepthatwhichthemagneticfieldismaximum.
5.Whichofthefollowingisadisadvantageofusingradiographictesting?
A.Itishighlysensitivetosurfaceconditions.
B.Itcandetectdefectsinmaterialswithhighattenuation.
C.Itisanon-destructivetestingmethod.
D.Itrequiresalargeamountofradiationexposure.
6.Intheprocessofmagneticparticletesting,themagneticfieldiscreatedby:
A.Analternatingcurrent.
B.Adirectcurrent.
C.Anelectromagneticfield.
D.Apermanentmagnet.
7.Whichofthefollowingisacommonapplicationofacousticemissiontesting?
A.Detectingsurfacecracksinmaterials.
B.Monitoringtheintegrityofpipelines.
C.Inspectingthethicknessofmaterials.
D.Identifyingthepresenceofvoidsincomposites.
8.Inthefieldofthermographictesting,thetermemissivityrefersto:
A.Theabilityofamaterialtoemitthermalradiation.
B.Theabilityofamate