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单项选择题
A.50±10,2400±200
B.50±10,2000±200
C.80±10,2400±200
D.80±10,2000±200
单项选择题
A.10h:24min
B.10h:25min
C.10h:32min
D.10h:30min
单项选择题
A.44.6MPa
B.42.4MPa
C.43.0MPa
D.40.9MPa
单项选择题
A.10s±2s,20mm±2mm,1N
B.10s±2s,25mm±2mm,10N
C.10s±2s,25mm±2mm,1N
D.10s±2s,20mm±2mm,10N