题目内容
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[主观题]
It is ______to be invited to speak here. A. good manners B. an honour C. a pride D.
It is ______to be invited to speak here.
A. good manners
B. an honour
C. a pride
D. a respect
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It is ______to be invited to speak here.
A. good manners
B. an honour
C. a pride
D. a respect
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