简述纱线覆盖系数。
以下属于出质人道德风险的有（） A.故意隐瞒监管物权属。 B.监管物以次充好。 C.未经监管人员同意强行提取监管物。 D.请求监管员低于警戒线放货。
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。
The term Loading and unloading Cargo means（）. arranging cargo。 shipping cargo。 cargo handling。 weighing cargo。
超电网供电能力停限电信息发布原则？
在维修总线的双绞线时，导线的平行部分可以有多长（）
