A light that has a light period shorter than its dark period is described as（）...

第1题

[单选题] An end user reports that their computer is making noise constantly. The technician notes that the hard drive activity light is on frequently. The technician finds plenty of free space on the drive.Which of the following BEST explains why the drive light is continuously active?（）

A、The system has a fragmented hard drive. B、The drive interface needs to be changed. C、The user has too many documents on the hard drive. D、The system page file has an issue.

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第2题

[单选题] You are on watch at night in clear visibility and the vessel has just been anchored.The first thing that you should do after the anchor has been let go is to（）.

A、stop the engines B、turn off the running lights and turn on the anchor lights C、take at least two bearings of prominent shore lights D、lower the accommodation ladder and illuminate it

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第3题

[单选题] I am afraid that you have to alter your（）views in light of the tragic news that has just arrived.

A、indifferent B、distressing C、optimistic D、pessimistic

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第4题

[] An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.

A、A.has long life B、B.is light weight C、C.absorbs shock D、D.has fine adjustment

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第5题

[单选题] A new Catalyst switch is connected to an existing switch using a crossover cable. As a result of this, what would the switch port link lights display?（）

A、The switch port link lights will be off on both switches indicating the ports are not connected. B、The switch port link light will be off on one switch indicating that STP has disabled the port. C、The switch port link lights will flash amber indicating an error. D、The switch port link lights will be green indicating normal operation.

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第6题

[单选题] A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.

A、an air leak has developed in the tank B、the tank cooling system has malfunctioned C、the pilot cylinder discharge valve is leaking D、an excessive amount of insulation has been installed on the tank and piping

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第7题

[单选题] A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.

A、an air leak has developed in the tank B、the tank cooling system has malfunctioned C、the pilot cylinder discharge valve is leaking D、an excessive amount of insulation has been installed on the tank and piping

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第8题

[单选题] At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.

A、red lights B、red lights and two white lights C、red lights with a white light in between D、white lights with a red light in between

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第9题

[单选题] At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.

A、red lights B、red lights and two white lights C、red lights with a white light in between D、white lights with a red light in between

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A light that has a light period shorter than its dark period is described as（）.

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