单选题What are customers told to do?ARead the warranty carefullyBClean the machine with gentle chemicalsCRefrain from closing the machine by handDDry the machine after cleaning
单选题
What are customers told to do?
A
Read the warranty carefully
B
Clean the machine with gentle chemicals
C
Refrain from closing the machine by hand
D
Dry the machine after cleaning
参考解析
解析：
在指南的第三条中提到开关机时用eject button，“Handling the machine manually may cause damage to the components”，可知手动开关机对机器有损害。C项正确。
在指南的第三条中提到开关机时用eject button，“Handling the machine manually may cause damage to the components”，可知手动开关机对机器有损害。C项正确。
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