A. contains high quantities of hydrogen sulfide B. is diluted with other products for carriage C. is lighter than other crudes D. is less hazardous to load than other crude
A. 内摩擦力 B. 黏聚力 C. 内摩擦力、黏聚力 D. 分子吸引力
A. 10-15℃ B. 15-20℃ C. 20-25℃ D. 25-20℃