更多"When using an ARPA，what should you "的相关试题:
[单项选择]When using the ARPA in heavy rain，which action should you take? （）
A. Increase the radar gain to pick up weak echoes through the rain
B. Increase the STC setting to reduce close-in spurious signals
C. Navigate as though the effective range of the radar has been reduced
D. Increase the range of the inner and outer guard rings
[单项选择]When using the lifeboat compass，you must be careful to（）.
A. set it on the centerline of the boat
B. apply the correction for compass error
C. keep metal objects away from it
D. All of the above
[单项选择]When towing，what is the main reason for using a chain bridle on a wire hawser（）.
A. It makes for an easy connection
B. It gives a spring effect to cushion the shock
C. It eliminates the necessity of a swivel
D. It does not chafe
[单项选择]Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
A. Set and drift of the current
B. Relative track information
C. Predicted time of CPA
D. Initial range of acquisition
[单项选择]When did you see her? What （） then?
A. was she doing
B. did she do
C. is she doing
D. has she hone
[单项选择]What’s the advantage when using the satellites?（）
A. The message can be directed to the desired location
B. The message can follow the earth‟s curvature
C. The quality of message can not be affected by climatic
D. the range of the message extend and the quality of reception is improved
[单项选择]The ARPA may swap targets when automatically tracking if two targets（）.
A. are tracked on reciprocal bearings
B. are tracked at the same range
C. are tracked on the same bearing
D. pass close together
[单项选择]
下列（）方法可以证明自已的身份。
1.What you know？
2.What you have？
3.Who you are？
A. 1，2，3
B. 2，3
C. 1，2
D. 1，3
[单项选择]What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）
A. The lines may jam and then jump off the gypsyhead
B. If there is sudden strain on the line，the man tending the line may be pulled into the gypsyhead
C. The lines' surging may cause the vessel to surge
D. The heat generated may cause the lines to temporarily fuse to the gypsyhead
[单项选择]Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
A. Alert the watch officer that a vessel is approaching the preset CPA limit
B. Warn of small targets that are initially detected closer than the outer guard zone
C. Guard against target loss during critical maneuvering situations
D. Sound an alarm for targets first detected within the zone
[单项选择]What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
A. An acquired target entering into a guard zone
B. A tracked target lost for one radar scan
C. A tracked target entering your preset CPA-TCPA limits
D. A target being initially detected within a guard zone
[单项选择]I'd like to know what you（）the plants I gave you.
A. made for
B. dealt with
C. live on
D. did with
[单项选择]Do not express shock for what you hear（） matter how shocking it might seem.
A. not
B. never
C. no
D. none
[单项选择]Do not express shock for what you hear（）matter how shocking it might seem.
A. not
B. never
C. no
D. none
[单项选择]When should you conduct a visual inspection of your towline? （）
A. Whenever its serviceability is in doubt
B. In accordance with the manufacturer's recommendation
C. At least once a month
D. All of the above
[单项选择]When towing astern what equipment should be stowed ready for use near the towline?（）
A. First aid kit
B. Axe or cutting torch
C. Fire extinguisher
D. Chafing gear
[单项选择]What should you do if you have transmitted a distress call a number of times on channel 16 and have received no reply?（）
A. Repeat the message using any other channel on which you might attract attention
B. Key the microphone several times before transmitting again
C. Turn up the volume on the receiver before transmitting again
D. Report the problem to the head electrician
