एक बंद कंपास ट्रैवर्स में निम्नलिखित दिकमान (bearings) लिए गए: रेखाअग्र दिकमान (FB)पश्च दिकमान (BB)AB80° 10'259° 00'BC120° 20'301° 50'CD170° 50'350° 50'DE230° 10'49° 30'EA310° 20'130° 15' यह मानते हुए कि रेखा 'CD' के प्रेक्षित दिकमान सही हैं, रेखा 'DE' के संशोधित अग्र दिकमान की गणना कीजिए।

In survey work using a total station with reflector measurements, which of the following sequence of temporary adjustments must be performed at a station?

While carrying out a total station survey on one bank of a 250 m wide river, it is necessary to plot electric transmission posts on the opposite bank. No provision exists for crossing the river and the posts are inaccessible. In which mode should the survey work be done?