moderate speed
safe speed
half speed
bare steerageway
第1题：
A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to ______.
A.moderate speed
B.safe speed
C.half speed
D.bare steerageway
第2题：
A vessel not under command sounds the same fog signal as a vessel ______.
A.engaged in towing
B.constrained by her draft
C.under sail
D.All of the above
第3题：
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
第4题：
stop your engines
sound two prolonged blasts of the whistle
sound the danger signal
slow to bare steerageway
第5题：
Continuous sounding of a fog whistle by a vessel is a signal ______.
A.that the vessel is anchored
B.to request the draw span of a bridge to be opened
C.of distress
D.that the vessel is broken down and drifting
第6题：
A vessel is "in sight" of another vessel when ______.
A.she can be observed by radar
B.she can be observed visually from the other vessel
C.she can be plotted on radar well enough to determine her heading
D.her fog signal can be heard
第7题：
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
第8题：
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a ______.
A.vessel being towed
B.fishing vessel engaged in trawling
C.vessel at anchor warning you of her location
D.power-driven pilot vessel on station underway
第9题：
If practical, when shall a manned vessel being towed sound her fog signal?______.
A.Immediately before the towing vessel sounds hers
B.Immediately after the towing vessel sounds hers.
C.As close to the mid-cycle of the towing vessel’s signals as possible
D.At any time as long as the interval is correct
第10题：
When at anchor，the pilot vessel is only required to sound anchor signals
The identification signal must be sounded any time the pilot vessel is underway
The pilot vessel may only sound the identity signal when making way
All of the above