轮机英语【二三管】题库 单选题 1分 The higher the cetane number, ____ the ignition quality of the fuel. A. the worse B. the better C. the smaller D. the greater 点击查看答案 进入题库练习 参考答案: B 你可能感兴趣的试题 1 单选题 1分 tablets 药片are placed in the______ and require replacement as they are used up. A. waste water inlet B. chlorinator ;氯化器 C. settling compartment D. aeration compartment 点击查看答案 2 单选题 1分 The officer in charge of the engineering watch shall ensure that all machinery involved with the maneuvering of the ship can be immediately be placed in the manual mode of operation when notified that the ship is _____. A. at anchor B. At unsheltered anchorage C. in congested waters D. in an open road-stead 点击查看答案 3 单选题 1分 The main objective of the SOLAS Convention is ______. A. to provide a solution of lowering pollution at sea B. to specify minimum standards for the members composing the watch at sea C. to specify minimum standards for ships considering their safety D. to tell the company how to go about running their business 点击查看答案 4 单选题 1分 Which is not the protection function of the motor? A. Overload protection B. Interlock protection C. Short circuit protection D. Zero-voltage protection 点击查看答案 5 单选题 1分 Although lube oils used in the main lubricating service systems should have a relatively high flash point to avoid ignition, they can create smoke and fire hazards when they ______. A. are exposed to a vacuum B. come in contact with extremely hot surfaces C. are reduced in temperature to just above the pour point D. become extremely agitated or aerated 点击查看答案