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相关考题：
When turning a ship in restricted space with a strong wind，it is normally best to ______．A.Go ahead on both engines with the rudder hard to one side，if on a twin-screw vesselB.Back down with the rudder hard to one side，if on a single-screw vesselC.Take advantage of the tendency to back to port，if on a twin-screw vesselD.Turn so that the tendency to back into the wind can be used，if on a single-screw vessel
A vessel is equipped with a single right-handed screw.With rudder amidships and calm wind, the vessel will most likely back ______.A.straight asternB.to portC.to starboardD.in no particular direction
A twin-screw ship going ahead on the starboard screw only tends to move ______.A.in a straight lineB.to portC.from side to sideD.to starboard
A technician dropped a screw in the case of a desktop computer. Which of the following toolsshould be used to retrieve the screws?（）A、Computer vacuumB、Plastic tweezersC、Canned airD、Screwdriver with magnetized tip
Which of the following would be the BEST device to use when removing a loose screw from theinside of a laptop?（）A、Needle-nose pliersB、Extension magnetC、Locking pliersD、Loopback plug
A technician is trying to retrieve a screw that fell inside a case and is just out of reach. Which of the following is the BEST procedure to retrieve the screw?（）A、Turn the case upside down, shake gently and let the screw fall out.B、Use a shop vacuum to retrieve the screw.C、Use the hardware abstraction layer (HAL).D、Use an extension magnet.
单选题The boat is stowed on the davit rather than on a cradle with which type of davit?（）ACrescentBSheath-screw boomCQuadrantalDRadial
单选题A twin-screw ship going ahead on the starboard screw only tends to move（）.Ain a straight lineBto portCfrom side to sideDto starboard
单选题A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel（）.Apermits the rudder to move fasterBgenerates more powerCcan turn without using her rudderDcan suck the water away from the rudder
单选题A screw pump belongs to （） according to its working principle.Areciprocating pumpsBpositive displacement pumpsCcentrifugal pumpsDcentripetal pumps
单选题A single-screw vessel going ahead tends to turn more rapidly to port because of propeller（）.Adischarge currentBsuction currentCsidewise forceDthrust
单选题While moving ahead，a twin-screw ship has an advantage over a single-screw ship because （）.Acorrect trim will be obtained more easilyBdrag effect will be cancelled outCside forces will be eliminatedDspeed will be increased
单选题In a （） the center screw is driven and the outer screws idle.Asingle screw pumpBdouble-screw pumpCtriple screw pumpDcentripetal pump
单选题The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.AbossBknuckleCskegDstrut
单选题A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind，the vessel will most likely back（）.Astraight asternBto portCto starboardDin no particular direction
单选题The most suitable pump for oily water separator feed duties is （）.Aa reciprocating pumpBa vane pumpCa centrifugal pumpDa triple screw pump
单选题A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead. There is no wind or current. Which statement is FALSE?（）.AIf one screw is stopped，the ship will turn toward the side of the stopped screwBThe principal force which turns the ship is set up by the wake against the forward side of the rudderCTurning response by use of the rudder only is greater than on a single-screw vesselDWith the rudder amidships，the ship will steer a fairly steady course
单选题The cylinder covers and the liners are bolted together by means of studs （） the cylinder frames.Ascrewing intoBbeing screw onCto screw onDscrewed into
单选题When start a screw pump, the by pass valve should be （）.AclosedBopened fullyCcracked openDpartly open
单选题One of the main differences between the various types of screw pumps is in the （）.Astuffing box diameterBdirection of rotation of the screwsCpitch of the screwsDtype of driving gears
单选题When turning a ship in restricted space with a strong wind，it is normally best to（）.AGo ahead on both engines with the rudder hard to one side，if on a twin-screw vesselBBack down with the rudder hard to one side，if on a single-screw vesselCTake advantage of the tendency to back to port，if on a twin-screw vesselDTurn so that the tendency to back into the wind can be used，if on a single-screw vessel
单选题Limit switches are used on which davits?（）ASheath-screw davitsBGravity davitsCRadial davitsDQuadrantal davits