题目内容

四个人同时分析矿物中的硫含量,每次取样4.75g。哪一分析结果报告合理?

A. 0.05%,0.05%
B. 0.047%,0.048%
C. 0.0469%,0.0470%
D. 0.04693%,0.04689%

查看答案

搜索结果不匹配？点我反馈

更多问题

某试样要求纯度的技术指标为≥99.0,如下测定结果不符合标准要求的是:

A. 98.99
B. 98.96
C. 98.95
D. 98.94

已知NaOH的浓度为0.0010 mol/L,其pH值表达正确的是:

A. 3
B. 3.0
C. 11.00
D. 11.0

四个人同时分析矿物中的硫含量,每次取样4.00g。哪一分析结果报告合理?

A. 0.04693%,0.04689%
B. 0.0469%,0.0470%
C. 0.047%,0.048%
D. 0.05%,0.05%

128.95需修约,它可修约为:

A. 128.9
B. 128
C. 129.0
D. 128.90