单项选择题
A.2℃之内 B.5℃之内 C.8℃之内 D.10℃之内
A.40-45% B.45-50% C.50-55% D.55-60%
A.80*60支纱 B.60*40支纱 C.60*60支纱 D.40*40支纱
A.700mm B.800mm C.900mm D.1000mm
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