单项选择题X 纠错
A.25% B.50% C.75% D.100%
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单项选择题
A.20min B.30min C.35min D.40min
A.500r/min B.800r/min C.1000r/min D.1200r/min
A.3min B.4min C.5min D.10min
A.1m B.2m C.3m D.4m
A.0℃ B.5℃ C.10℃ D.15℃
A.10-15s B.10-16s C.10-17s D.10-20s
A.240s B.300s C.360s D.380s
A.1.2 B.1.3 C.1.4 D.1.5
A.0.5-1m B.1-1.5m C.1.5-2m D.2-2.5m
A.2.5MPa,90% B.2.5MPa,100% C.5MPa,90% D.5MPa,100%
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