A. 轻质高强 B. 弹性模量大 C. 耐腐蚀性好 D. 低温性能好 E. 密度小 F. 不易加工
A. no earlier than 24 hours prior to loading B. no later than 24 hours prior to loading C. anytime prior to loading D. weekly
A. 正确 B. 错误
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