[单选题]When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will ____.
[单选题]In a heat exchanger where seawater is used to cool fresh water, the seawater pressure should be maintained lower than the freshwater pressure to______.
[单选题]Ship propulsion normally occurs with the help of a ______ , which is the term most widely used in English, al?though the word “screw” is sometimes seen, inter alia in combinations such as a “twin-screw” propulsion plant.
[单选题]The development of oil has kept pace with the ______made by the steady rise in power produced by modern marine diesels.
[单选题]The light weight of a ship is not nor?mally used to indicate the size of a ship, whereas the ______, based on the ship’s loading capacity, including fuel and lube oils etc. for op?eration of the ship, measured in tons at scantling draught, often is.