测定水中总氰化物时,若样品中含有大量亚硝酸根离子,将不干扰测定。

题型:判断题

问题:

测定水中总氰化物时,若样品中含有大量亚硝酸根离子,将不干扰测定。

考点:环境监测上岗考试氰化物氰化物题库
题型:判断题

Do an experiment _____ me, please.  [ ]

A. in                           

B. up                          

C. on

题型:判断题

减速地点标设在需要减速地点的两端各()处。正面表示列车应按规定限速通过地段的始点,背面表示列车应按规定限速通过地段的终点。

A、35m

B、25m

C、20m

D、30m

题型:判断题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet. Communicating via e-mail is by far the most common Intemet activity. You can ()with anyone in the world who has an Intemet address or e-mail ()with a system connection to the Internet. All you need is ()the Internet and an e-mail program. Two of the most widely used e-mail programs are Microsoft’s () and Netscape’s Navigator. A typical e-mail message has three basic (): header, message, and signature.

All you need is ()the Internet and an e-mail program.

A.attach with

B.grasp

C.possess

D.access to

题型:判断题

文字、表格、图形、声音、控制方法和决策思想等信息的处理都属于()的范畴。

题型:判断题

组织应识别为证实产品符合规定要求所必需的测量和监控。()

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