單項(xiàng)選擇題
A.500 B.450 C.240 D.100
A.29 B.25.7 C.27.9 D.24.6
A.0.1 B.0.15 C.0.2 D.0.25
A.0.1Ω•km~1.0Ω•km B.0.2Ω•km~1.0Ω•km C.0.3Ω•km~1.0Ω•km D.0.4Ω•km~1.0Ω•km
A.直徑1.0mm B.直徑2.0mm C.直徑3.0mm D.直徑4.0mm
A.不小于14.5m B.不大于14.65m C.不小于14.5m、不大于14.65m D.大于14.65m
A.N+1;1+1 B.1+1;1+1 C.1+1;N+1 D.N+1;N+1
A.0.50;0.50 B.0.50;0.45 C.0.45;0.45 D.0.45;0.50
填空題