A、It causes excessive smoking and soot at low firing rates
B、It doesn’t readily burn when combined with oxygen
C、It clogs fuel oil strainers more often
D、It forms a corrosive acid when mixed with water or water vapor
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A、1.Paragraph①（） B、2.Paragraph②（） C、3.Paragraph③（） D、4.Paragraph④（） E、5.Paragraph⑤（） F、A. What is the function of audio courses? H、B. What is the function of flash cards? I、C. What is the function of traditional courses? J、D. What are the most useful tools for language learning? K、E. What is the function of computer-aided courses? F. What can help you a lot with your language learning? 下列选项正确的是（）。
A、Frequently paraphrase what the caller is saying. B、Repeat what is being said multiple times so that the customer can understand exactly what to do. C、Speak very slowly when replying to the customer. D、Tell the customer to send an email stating exactly what the problem is so that the communication between the two parties is clear.
A、A.Value is: 8 B、B.Compilation fails. C、C.Value is: 12 D、D.Value is: -12 E、E.The code runs with no output. F、F.An exception is thrown at runtime.
A、A.00 B、B.0001 C、C.000120 D、D.00012021 E、E.Compilation fails. F、F.An exception is thrown at runtime.
A、A.What is this customers address? B、B.Does this customer have any unpaid bills? C、C.What is the balance in this customers account? D、D.What are the total sales for each of the last 6 months?
A、Bad combustion of the fuel B、Bad atomization of the fuel C、Liquid contaminants D、Solid contaminants
A、will remove all the toxic fumes from the air B、has the greatest cooling ability C、will leave no harmful residue D、completely removes combustible vapors from the air
A、the most common method used in the United States B、too expensive for common use C、generally safe to sea life D、generally harmful to sea life
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