[问答题] 什么是胞质泵动学说？

It is essential for（）to give a complete description of damage and shortage in the discharging report. ["the office staff","the terminal staff","the ship's crew","the insurance company"] Condensate must be drained from the intercooler and after-coolers of an air compressor because （）. ["the cooling effect of the condensate reduces the compressors efficiency","a danger of explosion exists whenever water is present in a compressor","water causes erratic operation of pneumatic components","the volumetric capacity of the first stage is reduced if water remai"] 哪一种形态的结构为动物细胞产能的主要地方？（） ["","","",""] 韧皮部卸出是指什么？ 酸压和水力压裂增产的基本原理和目的都是相同的，主要差别在于酸压一般不使用（） ["携砂液","前置液","支撑剂","顶替液"] 什么是胞质泵动学说？