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what chemicals did you use to treat the boiler water ?when you test alkalin

ity and acidity of water in boiler by pH test paper ? the result shows the boiler water is in acidiity . please describe what the possible cause is .

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更多“what chemicals did you use to treat the boiler water ?when you test alkalin”相关的问题

第1题

A big difference between Kojo and Sorie was that ______.A.Kojo took chemicals for some use

A big difference between Kojo and Sorie was that ______.

A.Kojo took chemicals for some useful experiment but Sorie only wasted his in making an alcoholic drink.

B.Sorie was rich but Kojo was poor

C.Kojo had a guilty conscience but Sorie did not

D.when Kojo objected, Sorie proved that what they were doing was reasonable

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第2题

Questions are based on the following passage. According to a report from the Harvard Schoo

Questions are based on the following passage.

According to a report from the Harvard School of Public Health, many everyday products, including some bug sprays and cleaning fluids, could lead to an increased risk of brain and behavioral disorders in children.The developing brain, the report says, is particularly (36) to the toxic effects of certain chemicals these products may contain, and the damage they cause can be (37) .

The official policy, however, is still evolving.Health and environmental (38) have long urged U.S.government agencies to (39) the use of some of the 11 chemicals the report cites and called for more studies on their long-term effects.In 2001, for example, the Environmental Protection Agency(40)the type and amount of lead that could be present in paint and soil in homes and child-care (41), after concerns were raised about lead poisoning.The agency is now (42)the toxic effects of some of the chemicals in the latest report.

But the threshold for regulation is high.Because children"s brain and behavioral disorders, like hyperactivity and lower grades, can also be linked to social and genetic factors, it"s tough to pin them on exposure to specific chemicals with solid (43)evidence, which is what the EPA requires.Even the Harvard study did not prove a direct(44)but noted strong associations between exposure and risk of behavioral issues.

Nonetheless, it"s smart to(45)caution.While it may be impossible to prevent kids from drinking tap water that may contain trace amounts of chemicals, keeping kids away from lawns recently sprayed with chemicals and freshly dry-cleaned clothes can"t hurt.

A.advocates

B.compact

C.correlation

D.exercise

E.facilities

F.interaction

G.investigating

H.overwhelmed

I.particles

J.permanent

K.restricted

L.simulating

M.statistical

N.tighten

O.vulnerable

第(36)题选

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第3题

What had been done to comply with the IBC.Code in terms of the carriage of liquid chemicals?()

A.Building chemical tankers.

B.Building sealed tankers

C.Building pipelines

D.Building tankers

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第4题

According to the passage , what will happen if the governments stop the use of some chemicals()

A.The economy of the countries will suffer

B.Unemployment in the countries will grow

C.Some people and scientists will criticize them

D.The chemical producers will strongly protest

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第5题

Which of the following would be the best title for the text? A.Strain of Stress: N

Which of the following would be the best title for the text?

A.Strain of Stress: No Way Out?

B.Responses to Stress: Gender Difference

C.Stress Analysis: What Chemicals Say

D.Gender Inequality: Women Under Stress

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第6题

Which of the following would be the best title for the text?[A] Strain of Stress: No Wa

Which of the following would be the best title for the text?

[A] Strain of Stress: No Way Out?

[B] Responses to Stress: Gender Difference

[C] Stress Analysis: What Chemicals Say

[D] Gender Inequality: Women Under Stress

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第7题

What are Ireland's chief exports?()

A.Foodstuffs(especially beef), electrical machinery,and chemicals

B. Wool, dairy products and fruit

C. Motor vehicles, electrical machinery and petroleum

D. Coal, mining equipment and textiles

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第8题

What time did you get up yesterday morning? ()
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第9题

They did hear from each other! What makes it, their last meet was already more than 22 years ago.()
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第10题

Zhongxing Chemicals Corporation in China exported two tons of disinfectant (消毒剂) in on

Zhongxing Chemicals Corporation in China exported two tons of disinfectant (消毒剂) in one container to the United States. The trade was effected on the term of CIF New York US$ 20000. Upon the reception of the consignment at New York Port, the Consignee found the disinfectant was wet and useless according to the normal function of the substance. The consignee brought the claim against the Carrier and Insurer and gave the notice to the local survey agent mentioned in the Policy without any delay. The cause and origin of the damage, in accordance with the survey report, is the moisture in the Container, resulting either from: Stuffing of the goods in an atmosphere with a high hygrometry (湿度) Accidental wetting by rainwater during the course of stuffing Stowing the bags on wet wooden bases.Questions:(可用中文回答)(1)What shall we do according to the survey report?(2) If the shipper presented a loading inspection report as follows, what measures shall we take?

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