Is it acceptable to start the machine the next day after turning it off at the end of the working day?

Starting a machine the next day without conducting a pre-operation check first can lead to potential hazards and mechanical issues. The pre-operation check is crucial as it ensures the equipment is in safe working condition, verifying that all components are functioning properly and that there are no leaks or other issues that could pose a risk to the operator or others in the vicinity.

By performing a pre-operation check, the operator can identify any potential problems, such as fluid leaks, equipment wear, or other faults that may not have been evident at the end of the previous workday. This practice is fundamental in maintaining safety standards and ensuring the longevity of the machinery. Engaging in thorough inspections helps to prevent accidents and equipment failure, which can lead to costly repairs and project delays.

In the context of the other options, while checking fluid levels or considering the machine’s condition might seem like adequate steps, they do not encompass the comprehensive approach necessary for ensuring full operational safety. A supervisor's inspection may not always be practical or necessary for every small piece of equipment, but the pre-operation check is a standardized procedure that every operator should follow before starting equipment each time.