单选题:当场地起伏高差较大、土方运输距离超过(  )m,且工程量大而集中时,可采用挖掘机挖土,配合自卸汽车运土,并在卸土区配备推

题目内容:
当场地起伏高差较大、土方运输距离超过(  )m,且工程量大而集中时,可采用挖掘机挖土,配合自卸汽车运土,并在卸土区配备推土机平整土堆。 A.500
B.1000
C.1500
D.2000

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答案解析:

中国武术(Chinese Kung Fu)已有数千年的历史,包含有众多搏击方式,是中国传统文化的重要组成部分。其诞生是出

中国武术(Chinese Kung Fu)已有数千年的历史,包含有众多搏击方式,是中国传统文化的重要组成部分。其诞生是出于古时对自我防卫、狩猎技巧及军事训练的需

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