To determine the pressure setting for a CPR valve, a multimeter is necessary to measure Ohms, Volts, and Amps. Each measurement is essential for effective diagnosis and adjustment of the valve. Thus, the answer is 'All of these answer choices.'
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A multimeter is necessary for measuring Ohms, Volts, and Amps to determine the pressure setting for a CPR valve. All these measurements are essential for accurate diagnosis and adjustment. Thus, the answer is 'All of these answer choices.' ;