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单选题
106、Dents are not permitted if they prevent correct operation of the parts.
A
Dents can prevent correct operation of the parts, so they are not permitted.
B
Correct operation of the parts does not allow dents to occur.
C
Dents that have an influence on the correct operation of the parts are not allowed.
答案解析
正确答案：C
解析：
解析:注释:prevent 防止,阻止; influence 影响。if 如果; so 因此。
相关知识点：
影响部件操作的凹痕不允许
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