更多"Most propellers on merchant vessels"的相关试题:
[单项选择]Fire detecting systems on merchant vessels may be arranged to sense （）.
A. smoke
B. rate of temperature rise
C. ionized particles
D. all of the above
[单项选择]Aboard damaged vessels，the MOST important consideration is preserving（）.
A. bilge pumping capacity
B. reserve buoyancy
C. level attitude
D. instability
[单项选择]Aboard damage vessels, the most important consideration is preserving（）.
A. bilge pumping capacity
B. reserve buoyancy
C. level attitude
D. instability
[单项选择]Why are most break bulk vessels built with the transverse framing system rather than the longitudinal system? （）
A. The transverse system is more resistant to hog and sag stresses
B. The numerous longitudinal frames cause excessive broken stowage
C. The transverse system provides better support to the varying cargo densities on a break bulk vessel
D. The deep web frames interfere with the stowage of break bulk cargo
[单项选择]Most very large ocean going vessels，such as bulk carriers and large tankers，tend to squat（）.
A. by the bow
B. by the stern
C. at the end nearest the bottom
D. evenly fore and aft
[单项选择]In most cases，when a large merchant vessel enters shallow water at high speed the（）.
A. maneuverability will increase
B. speed will increase
C. bow will squat farther than the stern
D. vessel will rise slightly，on a level plane
[单项选择]The most common type of davit found on merchant vessels today is the（）.
A. radial
B. sheath-screw
C. gravity
D. quadrantal
[单项选择]（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.
A. The medium speed 4-stroke trunk piston engine
B. The low speed 2-stroke crosshead engine
C. The medium speed 2-stroke crosshead engine
D. The low speed 4-stroke trunk piston engine
[单项选择]Kort nozzles are installed around the propellers of some vessels to（）.
A. Increase the thrust of the propeller
B. Protect the propeller from striking sawyers
C. Prevent the propeller from striking barges towed on the ship
D. Prevent the propeller from touching bottom in low water
[单项选择]Vessels，（）support vessels，should not enter the safety zone of a deepwater port unless clearance has been obtained from the Vessel Traffic Supervisor.
A. besides
B. excepted
C. otherwise
D. other than
[单项选择]Vessel propellers are classified as being right hand or left handA right hand propeller turns clockwise when viewed from（）.
A. the bow
B. the stem
C. the port side
D. the starboard side
[单项选择]A vessel is equipped with twin propellers，both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships，what will happen?（）
A. The bow will swing to starboard
B. The bow will swing to port
C. The vessel will steer a zigzag course
D. The vessel will steer a fairly straight course.
[单项选择]Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.
A. used for electrical fires only
B. the smallest
C. the most accessible
D. the most effective
[单项选择]Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.
A. kept on board no more than 2 years
B. inspected and serviced every 6 months
C. destroyed if more than 5 years old
D. maintained in good and serviceable condition
[单项选择]An appointment between vessels normally made on radio to meet in a certain area or position defines（）.
A. bona fide
B. rendez-vous
C. prima facie
D. action in personam
[单项选择]On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
A. hydraulic
B. electric
C. steam
D. diesel
[单项选择]On all vessels equipped with refrigeration units of over 20 cubic foot capacity, （）.
A. a gas mask suitable for protection against each refrigerant used, or a self contained breathing apparatus must be provided
B. it is the sole responsibility of the chief engineer to ascertain that all members of the engineering department are familiar with the use of gas masks or breathing apparatus
C. spare charges shall be carried for at least 50% of each size and variety of gas masks and/or self contained breathing apparatus
D. all of the above
[单项选择]Vessels having main engines arranged for air starting are to be provided with at least （）
A. one automatic drain serving both containers
B. two air starting containers of approximately equal size
C. one control air container and one starting air container
D. one additional means of starting the main engine
