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单选题Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）A Hydrochloric acidB ChlorineC Sulfuric acidD Zinc chromate

题目
单选题
Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）
A

Hydrochloric acid

B

Chlorine

C

Sulfuric acid

D

Zinc chromate

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相似问题和答案

第1题：

Which of the listed devices may be used as a digital device?

A.variable resistor

B.diode

C.strain gauge

D.thermistor


正确答案：B

第2题：

The following tells us how to reuse the used water.Which is the right order of the passage

A.to have the used water filtered
B.to put chemicals in it
C.to pipe it to the users
D.to pipe the used water to be purified to a factory

答案：A
解析：

第3题：

Which of the units listed is used to combust waste in the engine room?

A.Boiler

B.Incinerator

C.Generator


正确答案：B

第4题：

In the context of Advanced Power Virtualization， the shared pool refers to which of the following？（）

  • A、A pool of physical memory that can be used by any partition
  • B、A pool of physical processors that can be used by any virtual or dedicated partition
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第5题：

Users in an office routinely work with large graphics files. Which of the following preventivemaintenance tools can assist in maintaining system performance?（）

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第6题：

Which of the listed devices is used to measure pressure and convert it to an electrical signal?

A.Transducer

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C.Transformer

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正确答案：A

第7题：

Which two statements are true regarding the USING clause in table joins?（）

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正确答案:B,D

第8题：

Which of the listed conditions can be considered as the single greatest cause of accidents?

A.Speed

B.Excessive knowledge or skill

C.Human error

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正确答案：C

第9题：

Which command can be used to modify network options？（）

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第10题：

which one of the following accurately describes field names?（）

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正确答案:C

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