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单项选择题
A.30m
B.5m
C.15m
D.50m
单项选择题
A.16mm2
B.5mm2
C.10mm2
D.35mm2
单项选择题
A.95mm2
B.35mm2
C.70mm2
D.150mm2
单项选择题
A.15m*15m
B.5m*5m
C.10m*10m
D.25m*25m
单项选择题
A.两处
B.四处
C.三处
D.一处
单项选择题
A.5m
B.0.5m
C.3m
D.20m
单项选择题
A.40mm*4mm
B.30mm*3mm
C.20mm*2mm
D.50mm*5mm