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[主观题]
A.Visiting an exhibition.B.Travelling a tour.C.Attending a meeting.D.Doing a business.
A.Visiting an exhibition.
B.Travelling a tour.
C.Attending a meeting.
D.Doing a business.
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A.Visiting an exhibition.
B.Travelling a tour.
C.Attending a meeting.
D.Doing a business.
A.是一种表示塑胶材料加工时的流动性的数值
B.材料局部抵抗硬物压入其表面的能力
C.材料在弯曲负荷作用下破裂或达到规定弯矩时能承受的最大应力
D.材料在拉断前承受最大应力值