When measuring the resistance of a multimeter, what should be paid attention to when the conversion range and test are completed?

When measuring the resistance of a multimeter, what should be paid attention to when the conversion range and test are completed?

When measuring resistance, it cannot be measured by electricity. Because of measuring resistance, the meter is powered by an internal battery. If live measurement is equivalent to accessing an additional power source, it may damage the meter

When measuring current and voltage, a cannot change the range with live electricity. When selecting range, B should select the big one and choose the smaller one, so as to make the measured value close to the measuring range

When completed, the switch should be switched to the AC voltage, maximum gear, or neutral. E noted that the ohmmeter needs to be switched to zero without mechanical zeroing when the ohmmeter changes its range