单项选择题 A ship designed for carrying goods requiring refrigeration is called （）.

单项选择题 （）is an opening for supplying seawater to condensers, pumps,etclocated in the hull below the waterline and having means for the attachment of associated piping.

单项选择题 （）is a function of the reactive / resistive characteristics of the load items and cannot be adjusted by manipulating the alternator control devices.