A.the filter is clogged
B.bilge suction value is clogged
C.suction value and discharge value of the pump do not open fully
D.screw pump is worn seriously and volumetric efficiency is decreased
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A.separating oil too fast
B.the sensor flushed badly
C.the discharge solenoid value out of order
D.too low heating temperature
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
When starting air-conditioner in the winter, we should open（）in sequence.
Ⅰ.alve of warming
Ⅱ.alve of humidifier
Ⅲ.an
A.Ⅲ-Ⅱ-Ⅰ
B.Ⅲ-Ⅰ-Ⅱ
C.Ⅰ-Ⅲ-Ⅱ
D.Ⅱ-Ⅲ-Ⅰ
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
A.decreased
B.increased
C.fixed
D.closed
最新試題
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Diesel engine air start system check valves are opened by （）
The main purpose of port State control is not to（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
To proceed to the assistance of a ship in distress is（）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
The treatment of the fuel oils involves storage, heating, filtering and（）