replaces directional signals
makes the other vessel the stand-on vessel
indicates doubt as to another vessels actions
is the same as a MAYDAY signal
第1题：
A vessel may use any sound or light signals to attract the attention of another vessel as long as ______.
A.white lights are not used
B.red and green lights are not used
C.the signal cannot be mistaken for a signal authorized by the Rules
D.the vessel signals such intentions over the radiotelephone
第2题：
Which statement concerning satellite EPIRBs is TRUE ________．
A.Once activated，these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon
B.The coded signal identifies the nature of the distress situation
C.The coded signal only identifies the vessel's name and port of registry
D.If the GMDSS Radio Operator does not program the EPIRB，it will transmit default information such as the follow-on communications frequency and mode
第3题：
You are using VHF channel 16 (156.8 MHz) or 2182 KHz. You need help but are not in danger. You should use the urgent signal ______.
A.ASSISTANCE NEEDED
B.PAN-PAN
C.MAYDAY
D.SECURITE
第4题：
In order to insure that a RACON signal is displayed on the radar, you should ______.
A.increase the brilliance of the PPI scope
B.turn off the interference controls on the radar
C.use the maximum available range setting
D.increase the radar signal output
第5题：
An orange flag showing a black circle and square is a ______.
A.signal indicating a course change
B.distress signal
C.signal of asking to communicate with another vessel
D.signal indicating danger
第6题：
How should you signal the crane operator to move slowly ________．
A.Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa
B.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired
C.First tap your elbow with one hand and then proceed to use regular signals
D.First tap the top of your head with your fist and then proceed to use regular signals
第7题：
A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line. Which of the following could you do first? ______.
A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal
第8题：
Which of the following are true of Ethernet technology?
A．Hosts use a logical ring topology.
B．Hosts use a logical bus topology
C．Hosts must wait for an electronic signal to transfer data.
D．Hosts are directly connected to a wiring concentrator called a MSAU.
E．None of the above
第9题：
By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your radar plot shows this to be a meeting situation. You should ______.
A.turn to port
B.turn to starboard
C.maintain course and speed and sound the danger signal
D.maintain course and speed and sound no signal
第10题：