一般情况下,我国远洋船舶在装运下列货物时,可接受保函(). ["贵重货物","包装损坏的货物","成套设备","低档大宗货物"]
在低压客户的经营性、劳务性费用规定中,收费项目包括()。 ["复验费","用电启动方案编制费","复电费","移表费"]
滚珠丝杠副有噪声,其故障原因有()()()()。 ["滚珠丝杠轴承盖压合不良","滚珠丝杠螺母反向器损坏","滚珠丝杠润滑不良","滚珠破裂","滚珠丝杠制造误差大或轴向窜动量大","电动机与丝杠联轴器联动"]
车站咽喉通过能力取决于哪些因素?
建筑垃圾
需要苫盖篷布的货物要求?