×
单选题
If your decision is not to replace the unit, monitor its temperature for a minimum of 15 cycles.
A
If the unit is unchanged, it is necessary to monitor the ambient temperature for at least 15 cycles.
B
Keep monitoring the temperature of the unit for a minimum of 15 cycles until you install a new one.
C
If the unit remains unchanged, its temperature should be checked for at least 15 cycles.
答案解析
正确答案：C
