单项选择题
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the （）
A.Navigation Log Book B.Engine Room Log Book C.Oil Record Book D.Muster List
单项选择题 What is the harmful effect of sulfur in a fuel?（）
单项选择题 The flash point of a liquid refers to the temperature （）
单项选择题 The flash point of a petroleum product is an indication of its（）
