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单选题
IPC手册件号前面标识的2个点代表什么含义
A
代表该件号部件装机总数量为2个
B
代表该件号部件在本章节有2个
C
代表该部件为该章节带1个点的下级件
D
代表该件号部件2个成对使用
答案解析
正确答案：C
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