单项选择题
（） systems are provided with a stand-by device which will automatically be put in use in the even of the running device failing through a fault condition.
A.Alarm B.Monitoring C.Auto start-up D.None of the above
单项选择题 The difference between measured and desired values is called （）.
单项选择题 With UMS, when the engine room is unwatched （） will control the main engine.
单项选择题 （） handle and instruments are on the front.
