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輪機(jī)英語船舶電氣與船舶安全單項(xiàng)選擇題每日一練(2019.01.22)

單項(xiàng)選擇題
When the vessel entering the dock, the first work that engineer should contact with the shipyard （）
A.releasing the boiler water
B.the explosion detecting and cleaning for the fuel tank
C.the docking project related item
D.shore power and fire fighting water supply
單項(xiàng)選擇題
On what do you depend having the air cooler of main engine chemically washed?（）
A.increased air pressure differenced before and aft air cooler
B.reduced exhaust temperature in all cylinders
C.reduced temperature difference between water inlet and outlet
D.both A and C
單項(xiàng)選擇題
Which of the listed conditions can cause lacquer to be deposited on a piston skirt?（）
A.High sulphur content fuel
B.High lube oil temperatures
C.High vanadium content fuel
D.Excessive piston slap
單項(xiàng)選擇題
Which of the listed devices is used to measure pressure and convert it to an electrical signal?（）
A.Transducer
B.Reducer
C.Transformer
D.Rectifier
單項(xiàng)選擇題
The （） should be gradually reduced after FWE.
A.fuel oil
B.cooling water
C.starting air
D.auxiliary blower