• 2022-06-12 问题

    Which of the following does not belong to the coating of the SPME<br/>device? () A: PDMS; B: PDMS/DVB; C: CAR/PDMS/DVB; D: Tenax;

    Which of the following does not belong to the coating of the SPME<br/>device? () A: PDMS; B: PDMS/DVB; C: CAR/PDMS/DVB; D: Tenax;

  • 2022-06-27 问题

    ( )是数据处理技术与地理信息系统相结合,应用于公安实战的典型事例。 A: PTTS B: PGIS C: PDMS D: PDTS

    ( )是数据处理技术与地理信息系统相结合,应用于公安实战的典型事例。 A: PTTS B: PGIS C: PDMS D: PDTS

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