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Which substance might be subject to spontaneous combustion ________.A.CoalB.Scrap rubberC.LeatherD.All of the above

题目

Which substance might be subject to spontaneous combustion ________.

A.Coal

B.Scrap rubber

C.Leather

D.All of the above

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相似问题和答案

第1题:

Fires resulting from spontaneous(自发的) combustion are usually caused by the improper disposal of______.

A.cigarette butts(烟头)

B.oily rags

C.burner torches

D.lighted matches


正确答案:B

第2题:

Which statement is TRUE concerning the flash point of a substance ________.

A.It is lower than the ignition temperature

B.It is the temperature at which a substance will spontaneously ignite

C.It is the temperature at which a substance,when ignited,will continue to burn

D.It is the temperature at which the released vapors will fall within the explosive range


正确答案:A

第3题:

(c) Explain the reasons for the concerns of the government of Happyland with companies such as TMC and

advise the directors of a strategy that might be considered in order to avoid being subject to any forthcoming

legislation concerning the environment. (5 marks)


正确答案:
(c) The government of Happyland will be concerned by the negative impact on the environment. The growth in the number of
children born in Happyland will have raised the demand for disposable nappies as is evidenced from the market size data
contained in the question. In some countries disposable nappies make up around 4% of all household waste and can take
up to five hundred years to decompose! The government will be concerned by the fact that trees are being destroyed in order
to keep babies and infant children in nappies. The disposal costs incurred by the government in terms of landfill etc will be
very high, hence its green paper on the effect of non-biodegradable products in Happyland. The costs of such operations as
the landfill for such products will need to be funded out of increased taxation.
It might be beneficial for the directors of TMC to develop more eco-friendly products such as washable nappies which, by
definition, are recyclable many times over during the life of the ‘product’. Many parents are now changing to ‘real nappies’
because they work out cheaper and better for the environment than disposables.

第4题:

The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called ______.

A.Explosive range

B.Flash point

C.Ignition temperature

D.Combustion temperature


正确答案:C

第5题:

Atmospheres laden with coal dust or grain dust caused by loading these cargoes ______.

A.require loading operations to be shut down until the atmosphere clears

B.are toxic to human life

C.are subject to spontaneous combustion

D.may be explosive in some concentrations


正确答案:D

第6题:

Spontaneous combustion is caused by ______.

A.An outside heat source heating a substance until it ignites

B.Conduction of heat through a wall of material to the substance

C.Chemical action within a substance

D.All of the above


正确答案:C

第7题:

______ is the most liable to spontaneous combustion.

A.Cement

B.Chinaware

C.Fish meal

D.Steel products


正确答案:C

第8题:

A subject_____is the mechanism of that equipment.

A、which there continues to be intense debate

B、what continues to be intense debate

C、which continues to be intense debate

D、on which it continues to be intense debate


参考答案:A

第9题:

You are scheduled to load a bulk shipment of steel turnings.Which statement is TRUE ________.

A.The primary hazard of this cargo is that it is subject to spontaneous heating and ignition

B.The shipping papers should describe this cargo as Waste,Steel Borings

C.After loading,you may not sail if the temperature in each hold of steel turnings exceeds 54℃

D.This cargo may not be transported in bulk unless a special permit is issued by the competent authorities


正确答案:D

第10题:

Which molten substance is poured into the basket of a wire rope socket being fitted to the end of a wire rope ________.

A.Babbitt

B.Bronze

C.Lead

D.Zinc


正确答案:D

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