FOR_HIGH_RELIABILITY_OF_TRANSFORMER_ACTION,_HOW_MANY_FUNDAMENTAL_CHECK

1.	FOR_HIGH_RELIABILITY_OF_TRANSFORMER_ACTION,_HOW_MANY_FUNDAMENTAL_CHECKS_SHOULD_BE_DONE??$
A.	2
B.	3
C.	4
D.	Can‚Äö√Ñ√∂‚àö√ë‚àö¬•t tell
Answer» C. 4

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