A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?A.When dead in the water,it is often difficult to find the neutral position and slight headway or sternway may resultB.When going directly from full ahead to full astern,there is complete steering controlC.When the vessel has headway and the propeller is in neutral,there is no effect on rudder controlD.When maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM

A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?

A.When dead in the water,it is often difficult to find the neutral position and slight headway or sternway may result

B.When going directly from full ahead to full astern,there is complete steering control

C.When the vessel has headway and the propeller is in neutral,there is no effect on rudder control

D.When maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM


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_____ of the controllable pitch propeller enables the blades to be moved to change the pitch angleA.An external mechanismB.An internal mechanismC.An interlock deviceD.A hunting gear system

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Given the following expression about TextField which use a proportional pitch font.  TextField t = new TextField("they are good",40);     Which statement is true?() A、 The displayed string can use multiple fonts.B、 The maximum number of characters in a line will be 40.C、 The displayed width is exactly 40 characters.D、 The user can edit the characters.

单选题A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?().AWhen dead in the water,it is often difficult to find the neutral position and slight headway or sternway may resultBWhen going directly from full ahead to full astern,there is complete steering controlCWhen the vessel has headway and the propeller is in neutral,there is no effect on rudder controlDWhen maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM

单选题Which statement is TRUE concerning a towing vessel which,due to the nature of her work,is unable to keep out of the way of another vessel?()ABy day,she shall carry a black cylinder shapeBBy day,she shall carry two black balls in a vertical lineCBy night,she would show the same lights as a vessel not under commandDBy day,she would show the same shapes as a vessel restricted in her ability to maneuver

单选题Concerning the identification signal for a pilot vessel,in fog,which statement is TRUE?()AWhen at anchor,the pilot vessel is only required to sound anchor signalsBThe identification signal must be sounded any time the pilot vessel is underwayCThe pilot vessel may only sound the identity signal when making wayDAll of the above

单选题Your vessel is equipped with totally enclosed lifeboats. Which statement is true when the boat is enveloped in flames?().AThe ventilators will automatically close by the action of fusible linksBThe motor takes its air supply from outside the lifeboat to prevent asphyxiation of the crewCA water spray system to cool the outside of the boat is operated by a high-volume manual pumpDAn air tank will provide about ten minutes of air for the survivors and the engine

单选题As to the bearing, of the following, which statement is not true?()Aff overheat is found, the engine must be stopped for inspectionBMuch heat of the crankcase door indicates that the bearing is overheatedCIf bearing clearance is too large, knocking will be heard in the crankcaseDIf bearing clearance is too large or too small, the white metal may be melted

单选题Which statement is TRUE in an overtaking situation().AOne vessel is approaching another vessel from more than 20° abaft the beamBIt is the duty of the vessel being overtaken to get out of the wayCAny later change of bearing between the two vessels shall not make the overtaking vessel a crossing vesselDAll of the above

单选题Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is TRUE concerning this situation? ().AYou should maintain course and speedBThe container vessel is the stand-on as it is the larger vesselCYou are not to impede the safe passage of the container vessel in the channelDNone of the above

单选题Which statement about stopping a vessel is TRUE?()AA lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from asternBA vessel is dead in the water when the back wash from astern operation reaches the bowCA tunnel bow thruster can be used in an emergency to reduce the stopping distanceDWhen a vessel is dead in the water any speed displayed by doppler log reflects the current

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单选题Which statement is true concerning a vessel equipped with operational radar?().AThe Master of the vessel must be on the bridge when the radar is in useBThe radar equipment is only required to be used in restricted visibilityCThe use of a radar excuses a vessel from the need of a look-outDThis equipment must be used to obtain early warning of risk of collision

单选题Two barges are being pushed ahead by a tugboat.Which statement is TRUE concerning lights on the barges().AEach vessel should show sidelightsBEach vessel should show at least one white lightCThe barges should be lighted as separate unitsDThe barges should be lighted as one vessel

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单选题Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? ()ASlightly higher fuel consumptionBLack of directional control when backingCInefficient at high shaft RPMDSome unusual handling characteristics

单选题A fishing vessel is approaching a vessel not under command. Which statement is TRUE? ()AThe fishing vessel must keep clear of the vessel not under commandBIf the vessel not under command is a power-driven vessel,she must keep clear of the fishing vesselCThey must exchange whistle signalsDBoth vessels are required to take action to stay clear of each other

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单选题Which of the following statements is TRUE regarding automatic identification systems (AIS)? ()AAIS is a global tracking system that relies upon INMARSAT C service to communicate vessel position and other safety related information to similarly equipped vessels,aircraft and shore stations within the areaBAIS is a short-range 3 cm X-band radar system that automatically sends a vessel's position and other safety related information to similarly equipped vessels,aircraft and shore stations within the areaCAIS is a short-range VHF-FM system that automatically broadcasts a vessel's position and other safety related information frequently to similarly equipped vessels,aircraft and shore stations within the areaDAIS is a one-way centrally managed system that requires the local VTS to send commands to instruct each vessel to broadcast position and other safety related information to similarly equipped vessels,aircraft and shore stations within the area

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