单项选择题X 纠错
A.2-3mm B.3-4mm C.4-5mm D.5-6mm
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单项选择题
A.110mm B.100mm C.80mm D.70mm
A.3mm B.5mm C.10mm D.15mm
A.0.25mm B.0.5mm C.0.75mm D.1.0mm
A.1-3mm B.2-4mm C.3-5mm D.4-6mm
A.40% B.50% C.60% D.65%
A.90% B.80% C.85% D.70%
A.1-2mm B.2-3mm C.3-4mm D.4-5mm
A.1 B.1.414 C.1.732 D.1.5
A.1.414 B.1.732 C.1 D.1.25
A.1kV B.2kV C.3kV D.5kV
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