B, sometimes people think it wastes too much time
Question: Unlike the discrete waveform from an ECG, the EMG waveform is irregular. ... Answer: An ECG records electrical activity from the heart. Unlike the heart, skeletal muscle does not contract in a fully synchronized fashion. Instead, an EMG records the unsynchronized electrical activity of many muscle fibers.
Answer:
yes
Explanation:
there are several strands of evidence supporting the effectiveness of masks
They should be disinfected after every use
