单项选择题
A.keeping the terminals clean B.coating cable connections with petroleum jelly C.maintaining a trickle charge D.All of the above
Under which of the listed conditions can the engine roo...
单项选择题Under which of the listed conditions can the engine room retake the throttle control from the bridge（）.
A.Any time it is deemed necessary B.Only with the masters permission C.After a 10 minute delay to the input command D.Only after the throttle has been placed in stop
Copper is often used as an electrical conductor because...
单项选择题Copper is often used as an electrical conductor because it （）.
A.has high resistance at low temperatures B.has a highly polished surface C.is able to pass current with little opposition D.holds insulation together well
A device which prints out a permanent record of the pla...
单项选择题A device which prints out a permanent record of the plant operating conditions is known as the （）.
A.analogger B.bell logger C.alarm logger D.data logger
