更多"After the trouble of the automatic "的相关试题:
[单项选择]“Automatic Gain Control”的含义是（）。
A. 自动增益控制
B. 自动频率控制
C. 自启动
D. 增益调节
[单项选择]（） control system is one in which the control action is independent of the output.
A. Feed back
B. Negative feed back
C. Close loop
D. Open loop
[名词解释]综合自动化integrated supervision and control system
[单项选择]The flame safeguard control system of a large automatic auxiliary boiler will provide fuel shut off in the case of high （）.
A. water
B. voltage
C. fuel pressure
D. steam pressure
[单项选择]Who has permit the SES enter the system after successful commissioning?（）
A. Network
B. The CES preferred by the applicant
C. INMARSAT
D. The SES itself
[单项选择]When may the automatic identification system (AIS) be switched off? （）
A. At anytime as long as it is properly logged
B. At the Master's professional judgment
C. Only when the vessel is at anchor or in port
D. Under no circumstance
[单项选择]After resolving the trouble of main power supply, main switch of emergency generator should（）, if power supply is refreshed.
A. be switched off by the duty officer
B. be switched on by the duty officer
C. be switched off automatically
D. be switched on automatically
[单项选择]The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler （）
A. salinity is abnormally high
B. steam demand is too high
C. water level is abnormally low
D. feedwater flow is low
[单项选择]The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）
A. steam demand is high
B. salinity is high
C. safety valve simmers
D. burner flame is extinguished
[单项选择]After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.
A. furnace to be re-purged
B. electric charge to buildup in the igniter
C. fuel pump to restart
D. dram level to stabilize
[单项选择]In the starting system, the automatic valve is controlled by（）, and the cylinder start valves are controlled by（）
A. pilot air；pilot air
B. handle；solenoid
C. handle；pilot air coming through the distributor
D. solenoid；pilot air coming through the distributor
[单项选择]Remote control means that the system is being controlled by the operator who is situated （） from the system.
A. automatic
B. local
C. remote
D. manual
[单项选择]（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
A. SafetyNET
B. NAVTEX
C. NAVAREA
D. VHF R/T
[单项选择]The deck control valve to be（）after being repaired.
A. moved and fitting again
B. removed and refitted
C. reproduced and put on again
D. return and attached again
[单项选择]Control valves of a CO2 system may be located within the protected space when（）.
A. it is impractical to locate them outside
B. there is also a control valve outside
C. the CO2 cylinders are also in the space
D. an automatic heat-sensing trip is installed
[单项选择]In an automation system, the effect of a control action sensed by a controller is known as （）
A. command input
B. set point signal
C. output
D. feedback
[单项选择]After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?（）
A. The relief valves in the system should be readjusted
B. The filters and strainers should be checked frequently
C. All system pressure should be readjusted
D. The system should be drained and renewed with a fluid of different operating characteristics
