Set 9 Practice Mode

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Q11381
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What is the gap of stems of 'E' or 3 between them of earth?
Q11382
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What is the level that is widely used in construction work but not for more precise control work?
Q11383
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What is the instrument that one person can perform the levelling independently?
Q11384
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Which instrument may compute and apply refraction and curvature corrections?
Q11385
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Which type of levelling is done in order to connect a bench mark to the starting point of the alignment of any project in survey?