第六章质量与密度测试卷,C,C,B,C,B,C,C,D,C,A,C,D,200,32,3.2105,7.8,不变,变小,C,A,94,49,78,添加砝码应该从大到小,用手拿砝码,应该左边放物体、右边放砝码,0.45,0.05,称量时调节平衡螺母,相同,1.2103,37.4,45.4,E、C,71.2,8.9103,不是,零刻度线,左,40,1.1103,44,偏大,
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