What is the purpose of the intake/exhaust valves in a diesel engine? ()
A. They regulate the combustion cycle
B. They supply cooling water
C. They synchronize the ignition spark
D. They supply and regulate the lubricant flow
查看答案
Two short blasts of the whistle have all of the following meanings except().
A. I intend to meet you starboard to starboard
B. I do not intend to hold course and speed
C. I intend to overtake you on your port side
D. I intend to alter my course to port
由于可转换债券具有可转换股票这一优越条件,所以其发行利率较普通债券高。
A. 正确
B. 错误
当你的领导在做工作报告时,公布了一些不切实际的统计数据,你听到后会有什么反应?
维修系恢复性的彻底修理,接触网设备大修主要是整锚段更换接触网和附 加导线。接触网维修的目的在于改善接触网的技术状况,增强供电能力,适应运营的发展需要。
A. 正确
B. 错误