题目:
为了改善麻花钻横刃的工作条件,修磨时横刃时应把横刃()
A、磨长
B、磨短
C、增大
D、减小
答案:
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参考答案:D解析:[听力原文]More than 10 months after the end of major military operations in Iraq, American teams have still not found conclusive evidence that Iraq had any...