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
The diesel engine must be started before it can run by it self For this purpose （） has to be used.
A
a starting system
B
the starting air
C
a starting operation
D
A, B and C
参考答案
参考解析
解析：
暂无解析
更多 “单选题The diesel engine must be started before it can run by it self For this purpose （） has to be used.A a starting systemB the starting airC a starting operationD A, B and C” 相关考题
考题
Before "stand by" is rung on the engine telegraph, it is usual to give the main diesel engine a brief trial ahead and astern.A.with powerB.on powerC.with airD.on air
考题
Immediately after any diesel engine is started, the engineer should check the ______.A.crankcase pressureB.lube oil pressureC.saltwater pressureD.exhaust temperature
考题
The Chief and 3rd Engineers went below，changed the fuel to diesel oil and reduced the engine to slow ahead．This sentence implies all those below except that ________ ．A.the Engine was not on slow ahead before Chief and 3rd Engineers went downB.the Engine was using diesel oil before Chief and 3rd Engineers went downC.the Engine was using fuel oil before Chief and 3rd Engineers went downD.the Chief and 3rd Engineers went into the Engine Room to operate the Engine
考题
Before starting any diesel or gasoline engine, which of the following must be checked?____.A.Oil levelB.Flow of cooling waterC.Exhaust dischargeD.All of the above
考题
单选题Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）A
increasing the quantity of starting airB
increasing the lube oil pressureC
heating the engine fuel supplyD
heating the engine jacket water
考题
单选题As a heat engine,（） energy is the source of power by which the diesel engine can be operated.A
electricB
heatC
mechanicalD
exhaust
考题
单选题Under manoeuvring condition the main engine may run on （）.A
gas oilB
marine diesel oilC
residue oilD
crude oil
考题
单选题Leaking oil seals on a diesel engine turbocharger can cause（）A
the engine to run after the fuel has been securedB
the engine to over-speedC
a fireD
all of the above
考题
单选题Due to excessive water in the fuel, a diesel engine fails to startBefore the engine can be started, the water must be removed from the （）.A
fuel pumpsB
cylindersC
fuel strainersD
all of above
考题
单选题Clogged or partially obstructed exhaust ports on a diesel engine can cause（）A
over-speeding of the engineB
failure of the engine to shut downC
no effect of engine mounting boltsD
high exhaust temperatures
考题
单选题Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?（）A
Exhaust temperatureB
Lube oil levelC
Lube oil pressureD
Water level in the expansion tank
考题
单选题A diesel engine fails to start due to excessive water in the fuelBefore the engine can be started, the water should be removed from the（）A
fuel linesB
lube oil filterC
crank case pumpD
rocker arm reservoir
考题
单选题As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）A
Exhaust temperaturesB
Raw water pressureC
Lube oil pressureD
Air box pressure
考题
单选题Before a marine diesel engine is started the cylinders and pistons must be （）.A
cooled to appropriate temperatureB
warmed up gradually to appropriate temperatureC
opened up and renewedD
ground and polished
考题
单选题Before starting any diesel or gasoline engine，which of the following must be checked? （）A
Oil levelB
Flow of cooling waterC
Exhaust dischargeD
All of the above
考题
单选题Immediately after any diesel engine is started, the engineer should check the （）A
crankcase pressureB
lube oil pressureC
saltwater pressureD
exhaust temperature
考题
单选题The following preparations are essential for any （） of marine diesel engine before it may be started.A
doingB
makeC
turnD
operating
考题
单选题The is employed to warm up a large diesel engine before its starting（）A
hot airB
hot boiler waterC
cylinder waterD
hot seawater
考题
单选题Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）A
Over speedB
fire improperlyC
lose oil pressureD
overheatrapidly
考题
单选题Which of the following statements is true regarding the installation of piston rings on two-stroke/cycle, diesel engines as compared to four-stroke/cycle, diesel engines?（）A
In a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greaterB
Some provision must be made in a two-stroke/cycle engine to keep the rings from binding in the portsC
No gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engineD
The gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine
考题
单选题Permitting a diesel engine fuel oil day tank to run dry can cause （）A
overheated injection pumpsB
water condensation in the cylindersC
fuel dilution of the lube oilD
air in the fuel system
考题
单选题Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）A
compression must be low for effective spark ignitionB
compression must be low for required horsepower and torque generationC
compression must be low to prevent pre-ignitionD
compression must be low to have effective pre-ignition
考题
单选题The minimum speed an engine must attain before ignition can occur depends upon （）.A
the type and size of the engineB
the condition of the engineC
ambient temperatureD
all of the above
考题
单选题If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be（）A
on the power strokeB
on the exhaust strokeC
at the end of the power strokeD
at the start of the intake stroke
考题
单选题Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?（）A
The coolant temperature must be maintained at 180℃B
The thermostatic bypass valves must be manually opened before the engine is startedC
The pressure cap must be removed while the engine is securedD
Electrical power to the heater must be secured before the cooling system is drained
考题
单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）A
The diesel oil must never be allowed to mix with the heavy fuelB
The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveC
The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
考题
单选题The diesel engine must be started before it can run by it self For this purpose （） has to be used.A
a starting systemB
the starting airC
a starting operationD
A, B and C
热门标签
最新试卷