单项选择题
A.not less than twice B.greater at least twice than C.not greater twice than D.larger three times than
It is important that the water （） very often as this ca...
单项选择题It is important that the water （） very often as this can lead to increased deposits.
A.not be changed B.be changed C.should not be changed D.should be changed
It is abnormal that when the engine is being turned by ...
单项选择题It is abnormal that when the engine is being turned by the turning gear or by hand, （）.
A.water discharges from the indicator cocks B.no water is leaking into crankcase C.no water in the scavenge belt D.the rpm is lower than the speed of Dead Slow Ahead
Increasing the temperature of a fuel will reduce its （）...
单项选择题Increasing the temperature of a fuel will reduce its （）.
A.viscosity B.pressure C.resistance D.setting point
