单选题
1分
The development of oil has kept pace with the ______made by the steady rise in power produced by mod...
The development of oil has kept pace with the ______made by the steady rise in power produced by modern marine diesels.
参考答案: B
参考解析: 注:滑油的发展同现代船用柴油机功率的稳步提高所提出的不断增加的要求保持同步