单选题
1分
The development of ____ has kept pace with the increasing demands made by the steady rise in power p...
The development of ____ has kept pace with the increasing demands made by the steady rise in power produced by modern marine diesels.
参考答案: B
参考解析: 注:(滑)油的发展与现代船用柴油机功率稳步提高而对滑油不断增加的需求是保持同步的。