单项选择题
A.200mm*200mmB.220mm*220mmC.240mm*240mmD.260mm*260mm
A.80mmB.100mmC.120mmD.140mm
A.1500mmB.2000mmC.2500mmD.3000mm
A.ψ500mmB.ψ600mmC.ψ700mmD.ψ800mm
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