题目内容 (请给出正确答案)
[单选题]

In chemical analysis experiments, it is generally required that the relative average deviation of the measurement results should be()

A.greater than 0.2%

B.less than 0.2%

C.greater than 2%

D.less than 2%

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更多“In chemical analysis experimen…”相关的问题

第1题

材料分析技术可以分为哪几类?

A、Chemical composition analysis

B、Phase analysis

C、Microstructure analysis

D、Testing for properties

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第2题

______chemical analysis shows that water is made up of hydrogen and oxygen.A.ProspectiveB.

______chemical analysis shows that water is made up of hydrogen and oxygen.

A.Prospective

B.Provocative

C.Qualitative

D.Quantitative

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第3题

______ chemical analysis shows that water is made up of hydrogen and oxygen.A.ProspectiveB

______ chemical analysis shows that water is made up of hydrogen and oxygen.

A.Prospective

B.Provocative

C.Qualitative

D.Quantitative

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第4题

In concept design, we can check the feasible solution by()

A.experiments

B.analysis

C.Synthesis

D.production

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第5题

Generally speaking, the 8% weight loss in thermal gravity analysis is considered as decomposition temperature
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第6题

The age of prehistoric fossils can be determined by ______.A.nuclear chemical analysisB.da

The age of prehistoric fossils can be determined by ______.

A.nuclear chemical analysis

B.data left with the fossils

C.reconstructing the skull

D.external evidence in the ground in which the fossil is found

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第7题

How to check the taste?A.By eating them.B.By eating them and doing chemical analysis.C.By

How to check the taste?

A.By eating them.

B.By eating them and doing chemical analysis.

C.By doing chemical analysis

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第8题

In corrosion, removal part of the material is caused generally by some mechanical forces, while in w
ear, the only driving force is chemical reactions.
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第9题

Which would be the major responsibility (责任,职责) of the chemical engineer?A.direct rese

Which would be the major responsibility (责任,职责) of the chemical engineer?

A.direct research and development work

B.perform. chemical analysis (分析)

C.supervise (监督,指导) production work

D.direct other workers

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