單項選擇題
A.10’’ B.15’’ C.20’’ D.30’’
A.基輔分劃讀數(shù)之差的限差 B.基輔分劃所測高差之差的限差 C.單程雙測站所測高差較差的限差 D.檢測已測測段高差之差的限差
A.≤0.15 B.≤0.30 C.≤0.45 D.≤4.5
A.≤0.07 B.≤0.7 C.≤0.2 D.≤2.0
A.≤0.1 B.≤0.3 C.≤1.0 D.≤3.0
A.0.2 B.0.5 C.0.7 D.1.5
A.0.15 B.0.3 C.0.5 D.1.0
A.0.1 B.0.2 C.0.4 D.0.6
A.3 B.2 C.5 D.8
A.中絲讀數(shù)0.8m B.上絲讀數(shù)0.8m C.下絲讀數(shù)0.8m D.上絲讀數(shù)0.7m
A.3.5 B.2.5 C.1.5 D.0.7