题目内容

Among the following methods, the methods that can be used to extract different forms of heavy metals in soil include()

A. SPE solid phase extraction
BCR fractional extraction
C. Tessier continuous extraction method
D. ASE accelerated solvent extraction

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The source apportionment model of atmosphere which can infer the proportion of different source types is()

A. Enrichment factor method
B. Chemical element balance method
C. Pollution load model
D. Environmental fluid dynamics model

The pE value of natural water with the decrease of pH()

A. Decrease
B. Increase
C. Decrease first and then increase
D. Keep stable

What characteristics of soil lead to the non-linearity of pollution process and the decrease ofbioavailability of pollutants()

A. Severe human disturbance
B. Affected by atmosphere and hydrosphere
C. Highly heterogeneous medium
D. No significant change with time

Pentachlorophenol is an efficient and cheap broad-spectrum insecticide, preservative and herbicide, which has been widely used in schistosomiasis endemic areas to kill()

A. Larva of Schistosoma japonicum
B. Intermediate host snail of Schistosoma japonicum
C. Adult Schistosoma japonicum
D. Male Schistosoma japonicum

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