please I need some suggestion

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A multinational oil & gas company sent me an email today,telling me the have reviewed my CV from Naukri database.
Hence the are requesting I should answer the following questions below and forward my updated CV
**Three positions you target with us
**expected monthly salary in USD equivalent

Am a fresh graduate of Electronic and Computer Engineering, telecommunication option.
I have never work in an oil & gas company,to know the various positions available.please anyone who has work or is working in an oil & gas company should kindly suggest the three positions I should opt for that can be related to my field.about the monthly salary,should I tell the company that salary is negotiable.
The three target positions,should I write it in this format
Interest
*.........
*........
*........
The company requested for an updated CV,should I include a cover letter.
Am from Nigeria,anyone from India should please forward india CV and cover letter sample for fresh graduate.
thanks in advance