[问答题] 简述纱线覆盖系数。

卫生服务质量评价的主要方法有（） ["技术文书评价方法","统计指标评价法","卫生服务项目评价法及“病人满意度”评价","以上都是"] 手机银行可以绑定定期一本通账户。 停送电信息编译如何进行编译？ Which of the following statements is correct with regards to the operation of a centrifugal cargo pump?（） ["Oil is discharged from the impeller through the outlet","Gravity causes the oil to flow toward the discharge","The self-priming feature of the centrifugal pump enables it to draw its own suction as it starts","The discharge capacity varies directly with the speed of the impeller"] 客户定期未到期能通过手机银行转活期，只能全额转，不能部分转。 简述纱线覆盖系数。