单项选择题
A. Our ship is equipped with automatic hatch covers. B. Our ship is equipped with folding-type hatch covers. C. Our ship is equipped with side-rolling hatch covers. D. Our ship is equipped with rolling-type hatch covers.
A. The bosun is cleaning the heavy paint on deck. B. The bosun is scraping the heavy paint on deck. C. The bosun is scraping the loose paint on deck. D. The bosun is cleaning the loose paint on deck.
A. The hull is divided into a number of watertight compartments. B. The hull is divided into a number of gastight compartments. C. The hull is divided into a number of water compartments. D. The hull is divided into a number of tight compartments.