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当前学科:液压支架(柱)修理工技能竞赛
题目:
单选
以下哪种因素()不是影响液压支架初撑力的主要因素。
A . 泵站压力过低
B . 安全阀压力过高
C . 供液时间短
D . 支柱上下腔串液
答案:
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