Answer:
2). operation and control
4). operation monitoring
5). active listening
6). Critical thinking
Step-by-step explanation:
The usual skills that the stationary engineers must possess would include the skills associated with 'operations and control,' 'operation monitoring' and 'active listening,' and 'critical thinking.' The operations skills would assist in the effective accomplishment of daily objectives and targets while active listening helps in knowing the feedback of the consumer's and implementing it while critical thinking promotes attentiveness, problem-solving, and decision-making skills. Thus, options 2, 4, 5, and 6 are the correct answers.