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单选题
The operating medium for control systems may be （）.
A
compressed air
B
hydraulic oil
C
electricity
D
All of the above
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单选题Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）A
an insufficient speed droop settingB
an overloaded engineC
clogged drain holes in the oil control ringsD
complete combustion
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单选题Which of the following statements is TRUE regarding automatic identification systems (AIS) ?（）A
The master may，at his/her discretion，turn off the AIS if he/she believes that it may compromise the safety or security of the vesselB
Under no circumstances shall AIS be turned off while underway as this could endanger the vessel and those around herC
AIS is always required to be operating if the vessel is in or in the vicinity of a VTS areaD
AIS is always required to be operating if the vessel is within 100 nautical miles of the coastline
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单选题The operating medium for control systems may be （）.A
compressed airB
hydraulic oilC
electricityD
All of the above
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单选题Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capability.Which of the key points would only require an alarm sensor?（）A
Lube oil pressure and temperatureB
jacket water pressure and temperatureC
Engine over-speedD
Lube oil sump level
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单选题Which of the following BEST describes a virtualized server environment？（）A
A physical server environment utilizing only RAM storage with no physical disk medium to enhance performance.B
Multiple operating systems sharing the same physical hardware to leverage higher usage.C
A distributed computing environment where many lower cost machines are combined to increase processing power and overall performance.D
A single operating system using multiple physical hardware chassis to leverage higher availability.
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单选题Most Computer operating systems in use today, including all consumer-targeted systems, include a TCP/IP（）.A
planB
requirementC
implementationD
design
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a synthetic network adapterB
an emulated network adapterC
virtual machine queue （VMQ）D
Virtual Machine Chimney
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