单选题box spanner（）A套筒扳手B活络扳手C梅花扳手D锤子
单选题
box spanner（）
A
套筒扳手
B
活络扳手
C
梅花扳手
D
锤子
参考解析
解析：
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单选题box spanner（）A套筒扳手B活络扳手C梅花扳手D锤子