简述试答物流与商流的关系。
（）是指在科研人员主攻方向下选定研究的突破口与制高点，明确在这个方向下逐步实现并全面掌握的课题任务，制定实施的计划和步骤，以及所要采取的方法和途径。 ["选题","研究方向","研究课题","科学研究"]
个人活期一本通账户余额查询时，余额在（）显示。 ["主账户","子账户","无查询"]
If,during helicopter refueling operations,fuel is spilled on clothing,the person should first（）. ["see the medic immediately","spray hinself with foam or CO","complete his task and then see medic","remove the clothing and wash"]
下面不属于科研选题评价必须遵循的标准的是（）。 ["事实标准","转化标准","需要标准","逻辑标准"]
梅毒的治疗原则是什么？
