按照规定，一般情况下，铁矿粉的堆密度为（）吨/立方米。 ["A.2.2-3.1","B.3.7-4.3","C.4.5-4.8","D.3.1-3.6"]
增值服务平台支持按哪几种方式设定次数分配规则？（） ["A.按客户等级","B.按客户群","C.按服务类型","D.按服务合约"]
公司根据股东会或者股东大会、董事会决议已办理变更登记的，人民法院宣告该决议无效或者撤销该决议后，公司应当向公司登记机关申请（） ["变更登记","注销登记","重新登记","撤销变更登记"]
As the designated rudder angle is being achieved, as a result of the original command input, the steering gear follow-up mechanism is（） ["in motion, providing a null input","not in motion, thus providing a null input","in motion, providing an input to place the main pump on maximum stroke","in motion, providing an input to place the main pump at null stroke"]
客户在使用增值服务时，如对已发生的交易有疑问，可以通过哪些服务机构提出查询？（） ["A.发卡行","B.受理行","C.总行个金部","D.银联","E.95559客服"]
引起配电网线路故障的常见原因有哪些？
