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单选题
1189. 如果划痕没穿透保护层,这个装置是可使用的。
A
If the scratch does not go through the protective layer, the unit is serviceable.
B
If the nick does not go through the primary surface, the unit is serviceable.
C
If the scratch does not go through the protective surface; the unit is movable.
答案解析
正确答案：A
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