在0.5公里长的梯形土坝的一侧加筑土方,使坝的上、下底均加宽0.8米,已知该坝的梯形横断面在加筑土方这一侧的腰长为18米,该腰与底的夹角为30度,需多少方...

作者: rantiku 人气: - 评论: 0
问题 在0.5公里长的梯形土坝的一侧加筑土方,使坝的上、下底均加宽0.8米,已知该坝的梯形横断面在加筑土方这一侧的腰长为18米,该腰与底的夹角为30度,需多少方土? A.3600 B.7200 C.5400 D.4800
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答案 A
解析

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  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
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