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测定原油视密度选用分度值为()℃经检验合格的全浸水银温度计。
A.0.01
B.0.05
C.0.1
D.0.5
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- · 有4位网友选择 B,占比50%
- · 有2位网友选择 D,占比25%
- · 有1位网友选择 C,占比12.5%
- · 有1位网友选择 A,占比12.5%
A.0.01
B.0.05
C.0.1
D.0.5
评定碎石视密度,常称取约1kg重的碎石,其体积用1000mL的量筒量测(即量筒内先放约一半高的水,将碎石放入,这时筒内升高的水量即为碎石的体积。)今要求测定的视密度要准确至0.01g/cm3,问所用量筒的精度为最小分度值10mL是否满足要求?用于称重的天平,其最小分度值应是多少?
A.90%~100%(V/V)分度值为0.1
B.70%~100%(V/V)分度值为0.5
C.90%~100%(V/V)分度值为0.2
D.50%~100%(V/V)分度值为1
A、0.0003,0.0005,0.0007
B、0.0005,0.0007,0.0003
C、0.0007,0.0005,0.0003
D、0.0003,0.0007,0.0005
A.架盘药物天平,最大载荷100g,分度值0.1g
B.架盘药物天平,最大载荷100g,分度值0.01g单
C.精密电子天平,最大载荷2g,分度值0.01mg
D.单盘精密分析天平,最大载荷100g,分度值0.1mg
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