relieve excess fuel oil pressure during the “off” fire cycle
admit water to the dry pipe
throttle the forced draft fan output for proper combustion
reduce excess steam pressure in the boiler
第1题:
What is the purpose of pressure-vacuum relief valves ________.
A.Regulation of discharge pressure from cargo pumps
B.Maintaining constant velocity in cargo lines
C.Regulation of suction head on cargo pumps
D.To maintain a tank or void at atmospheric pressure
第2题:
Regulation of discharge pressure from cargo pumps
Maintaining constant velocity in cargo lines
Regulation of suction head on cargo pumps
To maintain a tank or void at atmospheric pressure
第3题:
function when the rudder is amidships
relieve excess whip pressure from the hydraulic oil system
protect the piping assembly from external rudder shock
relieve excessive telemotor pressure
第4题:
use
release
protect
effect
第5题:
Plugged injector nozzles
Excessive fuel injection
Very late injection timing
Incorrect crankshaft clearance
第6题:
stop valves
pressure relief valves
balance valves
regulating speed valves
第7题:
They regulate the combustion cycle
They supply cooling water
They synchronize the ignition spark
They supply and regulate the lubricant flow
第8题:
backfire through the air intakes
develop less power under load
have high firing pressures
lift its cylinder relief valves
第9题:
after the discharge valve
between the pump and discharge valve
after the suction valve
between the pump and suction valve
第10题:
An air compressor
An indicator cock
An air distributor
A safety valve
第11题:
to fill 2 tanks at the same time
to use pump at a higher pressure
to return liquid to suction side if discharge valve is closed
All of the above are true
第12题:
promote
improve
guarantee
both A and B
第13题:
All of the following steps are taken in starting a centrifugal pump,EXCEPT to ______.
A.Set the relief valve
B.Check the lubrication system
C.Vent the pump casing
D.Open the pump suction and discharge valves
第14题:
cargo pump pressure gauges
crossover lines interconnecting two pumps
suction side of pumps
atmosphere through pump vents
第15题:
completed
carried out
cleaned
steamed
第16题:
the cylinder cover is cracked
the injector holes is clogged
the cams are not properly set
fuel pump is leaking
第17题:
set the relief valve
check the lubrication system
vent the pump casing
open the pump suction and discharge valves
第18题:
too low lead
water in fuel
too tight spring
leakage
第19题:
IOPP
type approval certificate
cargo ship safety equipment certificate
cargo ship safety certificate
第20题:
fuel tank
bilge
atmosphere
auxiliary exhaust line
第21题:
rudder will respond sluggishly
hydraulic rams will over-speed
sight glass will show bubbles
ram relief valves will lift
第22题:
The boiler oil tank
The steam pipe
The fire side
The safety valves
第23题:
fuel valves;exhaust valve
exhaust valves;inlet valve
fuel valves;inlet valve
exhaust valves;fuel valve