a) The purpose of modelling is to understand, predict, control and, ultimately, to improve.
b) Knowledge of the failure characteristics of an item is important when selecting appropriate maintenance action.
c) Continuous improvement is one of the features of total productive maintenance (TPM). Which of the above statements is/are correct?
 b and c
 a and c
 a and b
 None of the above options (1, 2, 3, or 4) is correct.
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