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Which statement is TRUE concerning insulating flanges ________．
A.They should be inspected and tested periodically to ensure that the insulation is clean and in good condition
B.Switching off a cathodic protection system may be substituted for using an insulating flange
C.The measured resistance value after installation should be less than 1，000 ohms
D.After the insulating flange is installed，hot work may be performed on deck
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更多 “ Which statement is TRUE concerning insulating flanges ________．A.They should be inspected and tested periodically to ensure that the insulation is clean and in good conditionB.Switching off a cathodic protection system may be substituted for using an insulating flangeC.The measured resistance value after installation should be less than 1，000 ohmsD.After the insulating flange is installed，hot work may be performed on deck ” 相关考题
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