In a narrow channel, a signal of intent which must be answer

When can routine communications be resumed on a frequency or channel on which radio silence has been imposed ________．

A.After determining that the frequency or channel appears to be no longer in use

B.After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications

C.After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded

D.Routine communications can resume if，in the Master's opinion，communications on that frequency or channel will not interfere with emergency communications

Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.

A.When at anchor, the pilot vessel is only required to sound anchor signals

B.The identification signal must be sounded any time the pilot vessel is underway

C.The pilot vessel may only sound the identity signal when making way

D.All of the above

30． How should European companies do? Which of the following is NOT the answer?

A． They must be different from the American companies．

B． They must raise the quality of the things they sell．

C． They must work harder to sell things．

D． They must let the buyer touch or see in person．

In which case would an overtaking vessel sound a whistle signal of two prolonged followed by one short blast? ______.

A.When overtaking in restricted visibility

B.When overtaking in a narrow channel

C.When overtaking on open waters

D.When no other vessels are in the immediate area

A vessel proceeding along a narrow channel shall ______.

A.avoid crossing the channel at right angles

B.not overtake any vessels within the channel

C.keep as near as safe and practicable to the limit of the channel on her starboard side

D.when nearing a bend in the channel, sound a long blast of the whistle

In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel ______.

A.meeting another head-on

B.overtaking another

C.Any of the above

D.crossing the course of another

In a narrow channel or fairway when overtaking can take place only if the vessel to be over-taken has to take action to permit safe passing， the vessel intending to overtake shall indicate her intention by sounding appropriate signal． This means that ________ ．

A.the vessel to be overtaken shall sound appropriate signal first

B.the overtaking vessel shall sound appropriate signal first

C.the overtaking vessel shall take action to permit safe passing

D.the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal