A.control equipment
B.power unit
C.transmission mechanisms
D.fittings and pipeline
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A.stuffing boxes eliminate the leakage problems usually associated with other gear pumps
B.it is not necessary to closely maintain design clearances with this pump
C.they are essentially self-priming and produce a high suction lift
D.these pumps are designed with extreme tooth angled
A.seal water supply be cut off
B.make-up water supply be cut off
C.oil outlet valve closed or not open sufficiently
D.the flow rate of oil is too much
A.2
B.4
C.5
D.6
A.activate the driers
B.change color
C.secure the compressor
D.add a predetermined amount of liquid drier
A.stopping the main engine suddenly
B.changing the main engine running direction suddenly
C.the sailing from the shallow water area to the deep water area
D.the ship’s trim too much
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
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.
The treatment of the fuel oils involves storage, heating, filtering and（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
The shipboard oil pollution emergency plan will be invalid after （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The main purpose of port State control is not to（）