更多"The Consol navigation system，used i"的相关试题:
[单项选择]The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the （）.
A. bridge control panel
B. disconnect links
C. governor relay box
D. main switchboard
[单项选择]An operational amplifier, as used in todays consoles, has a calculated gain of 5This means that when the input changes （）
A. 5 volts, the output changes 10 volts
B. 10 volts, the output changes 5 volts
C. 2 volts, the output changes 10 volts
D. 10 volts, the output changes 2 volts
[单项选择]The component in an inert gas system used for cleaning the gas of solid and sulphur combustion products，while simultaneously cooling the inert gas，is called the（）.
A. filter
B. cooler
C. scrubber
D. purifier
[单项选择]What is NOT a securing system used on a containership?（）.
A. Lashing system
B. Stacking system
C. Locking system
D. Buttress system
[单项选择]Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.
A. flashing point
B. combustion point
C. auto-ignition point
D. lower explosive limit
[单项选择]A separate piston cooling system is used to limit any contamination （） piston cooling glands（） the piston cooling system only.
A. between；to
B. either；or
C. from；to
D. neither；nor
[单项选择]A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
A. purge lube oil from the liquid refrigerant
B. recover water purged from the system
C. separate foul gases from the receiver
D. purge non-condensable gases without losing refrigerant
[单项选择]In a central cooling system, used in some modem ships, sea water is supplied to cool （）which will circulate to other individual cooler, greatly reducing the corrosion problems.
A. fresh water
B. sea water
C. cooling oil
D. emulsion
[单项选择]A permanent chain chasing system is used to（）.
A. clean anchor chain as it's hauled in
B. recover anchors which have lost their buoys
C. run and retrieve anchors
D. prepare anchor chain for inspection
[单项选择]A separate piston cooling system is used （） any contamination from piston cooling glands to the piston cooling system only.
A. to help
B. to limit
C. to protect
D. to remove
[单项选择]The two most common gases used in pneumatic system are （）
A. compressed air and nitrogen
B. helium and nitrogen
C. oxygen and hydrogen
D. oxygen and acetylene
[单项选择]The receiver used in a refrigeration system（）
A. stores liquid refrigerant
B. collects non-condensable gases
C. allows refrigerant sub-cooling
D. prevents compressor surging
[单项选择]A solenoid valve used in a refrigeration system should be installed （）.
A. with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valve
B. upright, sensing temperature of the box, and upstream of the thermal expansion valve
C. upright, sensing temperature of the box, and downstream of the thermal expansion valve
D. upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
[单项选择]The sprinkler system of a survival craft is used to（）.
A. cool the craft in a fire
B. cool the engine
C. spray oil on the sea to calm it
D. spray personnel during a fire
[单项选择]（）can be used to prevent hydraulic system overloaded or keep the pressure of oil outlet from pump constant.
A. Overflow valve
B. Reducing valve
C. Balancing valve
D. Reducing valve or balancing valve
[单项选择]In a hydraulic system, （） are used to protect the system from over pressure.
A. stop valves
B. check valves
C. safety valves
D. reducing valves
