Highway Engineering
RC-2, MC-2 and SC-2 correspond to

None of these
viscosity in decreasing order from RC-2 to SC-2
viscosity in increasing order from RC-2 to SC-2
same viscosity

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Highway Engineering
The sequence of four stages of survey in a highway alignment is

preliminary survey, map study, reconnaissance and detailed survey
map study, reconnaissance, preliminary survey and detailed survey
reconnaissance, map study, preliminary survey and detailed survey
map study, preliminary survey, reconnaissance and detailed survey

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