单选题
696.The first step in listing possible causes of each trouble is to show what sections of the system may be at fault.
A
Listing possible causes of each trouble is to show what sections of the system may be at fault is the first thing we should do.
B
What sections of the system may be at fault depends on the first step in listing possible causes of each trouble.
C
To show what sections of the system may be at fault, listing possible causes of each trouble is the first thing we should do.
答案解析
正确答案:C
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