单项选择题X 纠错
A.the monitoring equipment is out of order
B.separating effect becomes bad
C.inner wall is contaminated
D.separating effect becomes bad and inner wall is contaminated
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单项选择题
A.Ⅲ-Ⅱ-Ⅰ
B.Ⅲ-Ⅰ-Ⅱ
C.Ⅰ-Ⅲ-Ⅱ
D.Ⅱ-Ⅲ-Ⅰ
单项选择题
A.close Fan and Humidifier at the same time
B.firstly close Fan and then close humidifier immediately
C.firstly close humidifier and then close Fan immediately
D.firstly close humidifier and then close Fan after 30 seconds
单项选择题
A.decreased
B.increased
C.fixed
D.closed
单项选择题
A.decreased
B.increased
C.fixed
D.closed
单项选择题
A.the bearing near to the diesel engine
B.the intermediate bearing near to the thrust bearing
C.the intermediate bearing near to the sterntube
D.the bearing located at the middle of the diesel engine and the sterntube
单项选择题
A.Ⅰ
B.Ⅱ
C.Ⅲ
D.Ⅱ+Ⅲ
单项选择题
A.the rotate speed fluctuation
B.the ventilation tube clogged
C.the main engine accelerate so fast
D.stormy waves
单项选择题
A.dropping lube oil for lubrication, reducing the pollution to the sea
B.setting a temporary gravity oil tank and enhanced the position properly
C.lubricating with the used lube oil
D.lubricating with the fresh water and navigation in a lower speed
单项选择题
A.adjusting the position of the intermediate bearing
B.changing the position of the main engine installation
C.adjusting the center line of the propeller
D.changing the position of the thrust block
单项选择题
A.prevent the seawater from intergrating
B.prevent the lube oil from running out of the outside aboard
C.strengthen the intencity of the sterntube
D.prevent the mud and sand from entering the lube oil system