Question

1. probe calibration is usually conducted: (mark all that apply) * at the start of every shift if the probe is disconnected it is only need to be calibrated once when used for the first time

Explanation:

• In many technical or laboratory settings (related to fields like Engineering, Medicine and Health, etc. within Natural Science), probe calibration is often done at the start of every shift to ensure accuracy for the work period. Also, if a probe is disconnected, its calibration might be affected, so re - calibration is needed. The statement "It is only need to be calibrated once when used for the first time" is incorrect as probes often require regular calibration, not just a one - time calibration at first use.

Answer:

A. At the start of every shift
B. If the probe is disconnected