更多"Signs of racking stresses generally"的相关试题:
[单项选择]In order to control thermal stresses, some types of modern engines use pistons with（）
A. heavy wall and intensive cooling
B. heavy wall and no cooling
C. thin wall and no cooling
D. thin wall and intensive cooling
[单项选择]To prevent the build up of high stresses engine must not be run continuously （）.
A. faster than dead slow speed
B. slower than dead slow speed
C. with the output of MCR
D. at critical speeds
[单项选择]The shearing stresses on a ship’s structure are usually greatest at（）.
A. the bow
B. the stern
C. midships
D. the ship's quarter-length points
[单项选择]Which statement is generally correct regarding the maintenance requirements for ships under GMDSS（）.
A. Redundancy of functions of certain equipment will partially meet this requirement
B. On-board maintenance provided by a person holding a GMDSS maintainer's license will partially meet the requirements
C. Shoreside maintenance and scheduled tests and inspections will partially meet this requirement
D. All of the above
[单项选择]An increase in crankcase pressure generally indicates（）
A. worn connecting rod bearings
B. worn engine cylinder liners
C. high cylinder firing pressure
D. stuck spring-loaded manhole covers
[单项选择]The person who signs the bill of lading without the authority of the Shipowner stating that goods have been shipped，and they have in fact not been shipped at all，（）liable to an indorsee of the bill of lading，who has relied on that statement，for damages for breach of warranty of authority.
A. have
B. has
C. are
D. is
[单项选择]Good anchorage may be obtained anywany, generally mud and sand, in this water area. Vessel may have（）.
A. good towing ground
B. good holding ground
C. good grabbing ground
D. good dragging ground
[单项选择]Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of（）.
A. liquid chemicals in bulk
B. solid chemicals in bulk
C. chemicals in bulk
D. cargoes in bulk
[单项选择]Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）
A. natural aspiration
B. masked intake valves
C. air cells
D. scavenging air
[单项选择]Those generally used additives for cooling water are either anti-corrosion oils or inorganic（）.
A. gases
B. paints
C. inhibitors
D. detergent
[单项选择]Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.
A. control the back pressure of return oil
B. lock the oil lines under some conditions
C. change the direction of oil flow
D. act as relief valve
[单项选择]Large crosshead type engine generally has two lubrication systems, a function performed only by cylinder oil system is（）
A. lubricating
B. cooling
C. sealing
D. cleaning
[单项选择]The shoreline on charts generally represents the mean（）.
A. High water line
B. Low water line
C. Low water spring line
D. Tide level
[单项选择]Green lights may appear on（）.
A. horizontally banded buoys
B. vertically striped buoys
C. yellow buoys
D. spherical buoys
[单项选择]Generally, runaway means such situation when the speed main engine exceeds the rating speed by its （）
A. 10%
B. 15%
C. 20%
D. 5%
[单项选择]Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
A. spark plugs
B. glow plugs
C. heat of compression
D. a magneto
[单项选择]Heavy fuel oils generally have an upper average ash content of 0~1% by weight.Which of the following conditions could be expected if the ash content increase above this amount?（）
A. Glazing of the cylinder liners
B. Increase valve wear
C. Excessive oil pumping
D. Increase fuel consumption
[单项选择]Which one of the following is not generally recognized as one constitute of bilge water?（）
A. Oil leaking from tanks inside engine room
B. Engine room cleaning water
C. Water leaking from the separator sludge tank
D. Sewage
