單項(xiàng)選擇題
A.3~6cm B.0.5~2m C.2~3m D.3~5m
A.1mmB.2mmC.3mmD.5mm
A.0.1≤f≤1MHz B.1≤f≤16MHz C.1≤f<≤100MHz D.14≤f≤250MHz
A.5V(r.m.s) B.3V(r.m.s) C.2V(r.m.s) D.1V(r.m.s)
A.5V/m B.3V/m C.2V/m D.1V/m
A.0.2m B.0.5m C.1.0m D.1.5m
A.10mm B.20mm C.50mm D.100mm
A.>25mm B.不小于電纜外徑的4倍 C.不小于電纜外徑的8倍 D.不小于電纜外徑的10倍
A.300mm B.500mm C.1000mm D.1200mm
A.1.4×107 B.7×105 C.2.4×105 D.1.3×105
A.110m B.105m C.100m D.90m