更多"Which of the items listed causes a "的相关试题:
[单项选择]The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）
A. governor flyweight action on a pilot valve which controls fuel injection
B. governor flyweight motion acting on fuel controls through suitable linkage
C. positioning a butterfly valve in the fuel delivery system positioning
D. a servomotor piston attached to the fuel controls
[单项选择]The result of two forces acting in opposite directions and along parallel lines，is an example of what type of stress?（）
A. Tensile
B. Compression
C. Shear
D. Strain
[单项选择]The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when（）.
A. decelerating when lowering the load
B. decelerating when raising the load
C. lowering the load at constant speed
D. raising the load at constant speed
[单项选择]Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A. Electric power and starting air
B. Lube oil standby pump and control air
C. Hydraulic switch and engage jacking gear
D. Motor drain and pneumatic control system power
[单项选择]Which of the following items is necessary for all waste heat boiler installations, regardless of design or manufacturer? （）
A. Control of evaporation
B. A separate means to prevent feed-water contamination
C. Power circulating pump
D. Super-heater
[单项选择]Point out which one of the following items is not in the charge of Chief Officer in repairing operation（）.
A. hull cleaning
B. derusting and painting
C. the maintenance of boiler
D. docking and undocking
[单项选择]Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
A. Falkland Current
B. Brazil Current
C. Norway Current
D. Benguela Current
[单项选择]Which of the following items don’t belong to dock repair works?（）
A. making the repair list, booking spare parts and special tools for the dock repair
B. shutting off all of the S.W valves to outboard
C. the sketches or diagrams used for the dock repair
D. cleaning up the oil tank and boiler before enter the dock
[单项选择]Which of the listed items will stop a motor due to a reduction in voltage and restart it when the voltage is restored to normal?（）
A. Low voltage protection circuit
B. Non-renewable link fuse
C. Renewable link fuse
D. Low voltage release circuit
[单项选择]Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?（）
A. Accidental discharge of oil
B. Disposal of oil residues
C. Quantity of water produced by FWG
D. Discharge of dirty ballast or cleaning water from fuel oil tanks
[单项选择]Rotating flyweights acting against spring pressure make a simple type of （）.
A. governor
B. safety valve
C. reducing valve
D. feed water regulator
[单项选择]direct表示（）
A. 8位立即数
B. 16位立即数
C. 8位直接地址
D. 16位地址
[单项选择]The single acting cylinder is the simplest form where pressure is applied to the full area of the piston head to move the load through piston rod extensionThe load causes rod （） when the drive pressure is released.
A. contraction
B. retraction
C. expansion
D. shrinkage
[单项选择]Tensile stress is a result of two forces acting in（）.
A. opposite directions on the same line，tending to pull the material apart
B. opposite directions on the same line，tending to compress the object
C. opposite directions along parallel lines
D. the same direction along parallel lines
[单项选择]The usual number of single-acting pistons used in a variable stroke axial-piston pump is （）.
A. 3 or 5
B. 5 or 7
C. 7 or 9
D. 9 or 11
[单项选择]A vessel behaves as if all of its weight is acting downward through the center of gravity，and all its support is acting upward through the（）.
A. keel
B. center of buoyancy
C. tipping center
D. amidships section
