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单选题
确保螺栓上的标记与手柄上的标记水平.
A
Make sure that the mark on the bolt is aligned with the mark on the handle.
B
Make sure that the mark on the bolt is level with the mark on the handle.
C
Make sure that the mark on the bolt is parallel to the mark on the handle.
答案解析
正确答案：B
相关知识点：
螺栓手柄标记要水平对齐
