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单选题
列出每个故障的可能原因的第一步是显示系统的哪些部分可能出现故障。
A
The first step in listing possible causes of each trouble is to show what sections of the system may be at fault.
B
Listing possible causes of each trouble is the first step to show what sections of the system may be failure.
C
The first step in listing which parts of the system are likely to fail is to show the possible causes of each failure.
答案解析
正确答案：A
相关知识点：
故障原因查找第一步
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