下列操作步骤中错误的是 A 将天平放在水平的桌面上调节天平横梁平衡 B 在调节天平平衡时如左盘下沉则调节左侧平衡螺母�右移 Template




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tomski下列操作步骤中错误的是 a 将天平放在水平的桌面上调节天平横梁平衡 coloring