从自然、社会、自我三个维度切入主题，是综合实践活动四大指定领域融合实施的有效途径。
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碎石的压碎指标值是以（）次试验值的算术平均值作为压碎指标测定值，计算时精确至（）%。
科技报告以阐述作者的科学见解为目的，而科技论文则以陈述科研工作的经过与结果为目的。
A. 正确
B. 错误
Which two statements are true regarding the functionality of the remap command in ASMCMD？（）
A. It repairs blocks that have read disk I/O errors.
B. It checks whether the alias metadata directory and the file directory are linked correctly.
C. It repairs blocks by always reading them from the mirror copy and writing them to the original location.
D. It reads the blocks from a good copy of an ASM mirror and rewrites them to an alternate location on disk if the blocks on the original location cannot be read properly.
胰头癌可表现为（）
A. 胰管串珠状扩大
B. 胰管均匀性增大
C. 胰管不扩大而胆总管、胆囊及肝内胆管扩大
D. 胆总管及胆囊显示不清，而左、右肝内胆管扩大
E. 胆囊肿大
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