网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.
A
timing
B
deviation
C
firing order
D
phase
参考答案
参考解析
解析：
暂无解析
更多 “单选题Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.A timingB deviationC firing orderD phase” 相关考题
考题
Feasibility studies occur in which life cycle phase (s)?A.ConceptualB.Conceptual or DevelopmentC.ExecutionD.Preliminary planningE.any life cycle phase
考题
Typically, during which phase in a project life cycle are most of the project expenses incurred.A . Concept phaseB . Development of design phaseC . Execution phase.D . Termination phase.E . None of the above
考题
During which phase of the project life cycle is the amount at stake lowest?A conceptB developmentC executionD conclusionE C and D
考题
194 During which phase of the project life cycle is the amount at stake lowest?A. conceptB. developmentC. executionD. conclusionE. C and D
考题
6 Typically, during which phase in a project life cycle are most of the project expenses incurred. A. Concept phaseB Development of design phaseC. Execution phase.D. Termination phase.E. None of the above
考题
88 Typically, during which phase in a project life cycle are most of the project expenses incurred. A. Concept phaseB. Development of design phaseC. Execution phase.D. Termination phase.E. None of the above
考题
● Feasibility studies occur in which life cycle phase (s)?A ConceptualB Conceptual or DevelopmentC ExecutionD Preliminary planningE any life cycle phase
考题
Which of the following statements is correct?A．The definition phase results in the Software Requirements Specification.B．Testing is optional in software life cycle.C．CASE tools can only aid in the design phase of a software life cycle.D．A change during a later phase does not require the documentation of all earlier phases to be updated.
考题
During the valve overlap period, the exhaust pressure of a turbocharged four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure ______.A.effective cylinder scavenging and coolingB.constant pressure from the turbochargersC.cooler operation of the exhaust systemD.effective constant pressure for turbocharger operation
考题
单选题A connecting rod in a four-stroke/cycle diesel engine is subject to（）A
tension load twice each crankshaft revolutionB
compression load during power and compression strokesC
inertia load once every four crankshaft revolutionsD
bending loads at bottom and top dead center
考题
单选题During which of the listed piston stroke of a four-stroke/cycle diesel engine, is the piston moving downward?（）A
Intake strokeB
Compression strokeC
Exhaust strokeD
Pumping stroke
考题
单选题What determines the number of events occurring in a cycle of operation in an internal combustion engine?（）A
Crankshaft revolutionB
Type of engine (diesel or gasoline)C
Distance a piston travels during a strokeD
Number of pistons
考题
单选题When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）A
intake strokeB
compression strokeC
power strokeD
exhaust stroke
考题
单选题The trouble-free life of an engine indicates （）.A
the period of time during which no trouble occurs to the engineB
no trouble will occur to the engine all its lifeC
trouble may occur freely to the engineD
no matter what you do to the engine, no trouble will occur during this period
考题
单选题Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be（）A
placed as near the crankpin axis as possibleB
removed each time the crankshaft is repositionedC
left in place for all four readingsD
reset to zero for all four readings
考题
单选题During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure （）A
effective cylinder scavenging and coolingB
constant pressure from the turbochargersC
cooler operation of the exhaust systemD
effective constant pressure for turbocharger operation
考题
单选题Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.A
exhaust gas temperature systemB
exhaust load systemC
constant or pulse pressure systemD
constant volume system
考题
单选题Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.A
timingB
deviationC
firing orderD
phase
考题
单选题What is the crank angle between any two crank throws in the firing order of a four-stroke/cycle, in line, eight cylinder diesel engine?（）A
45B
60C
90D
100
考题
单选题Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.A
throwB
crankshaftC
crankpinD
crosshead
考题
单选题Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.A
timingB
powerC
firing orderD
dead center
考题
单选题（） of an engine crankshaft can be detected by measuring deflections of crank webs for each unit of the engine.A
MisalignmentB
LengthC
StrengthD
Stresses
考题
单选题With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.A
a micrometerB
a bowlC
a feeler gaugeD
a wrench
考题
单选题The purpose of the flywheel of a diesel engine is to （）.A
counterbalance the crank throws on the crankshaftB
keep the engine running smoothly between power strokeC
provide a belt-driving surface for the operation of auxiliary machineryD
prevent the engine from overspeeding
考题
单选题The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load.Which of the following statements describes this requirement?（）A
Proper timingB
Accurate meteringC
Suitable injection rateD
Suitable atomization rate
考题
单选题The period of a lighted aid to navigation refers to the（）.A
date of construction or establishmentB
length of time between flashes of the lightC
time required for the longest flash of each cycleD
time required for the light to complete each cycle
考题
单选题A piston in a four-stroke/cycle diesel engine makes four strokes during each （）.A
crankshaft revolutionB
mechanical cycle of operationC
period of two combustion cyclesD
cycle of two events
考题
单选题The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）A
the same, whether at sea, or during maneuveringB
adjusted during each hour of operation while at constant RPMC
higher at sea than while maneuveringD
lower at sea than while maneuvering
热门标签
最新试卷