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 cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）.
A
the beginning of the compression stroke
B
the beginning of the suction stroke
C
the end of the working stroke
D
the end of the exhaust stroke
参考答案
参考解析
解析：
暂无解析
更多 “单选题The cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）.A the beginning of the compression strokeB the beginning of the suction strokeC the end of the working strokeD the end of the exhaust stroke” 相关考题
考题
_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A.An air receiverB.An operating valveC.An automatic valveD.An air distributor
考题
In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A.Noise coming from that air starting valveB.Continuous operation of the starting air compressorC.Zero air pressure in the air starting systemD.Overheated starting air pipe to the cylinder head
考题
How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．A.Cylinder head valvesB.PortsC.Turbo chargersD.Bleeder valves
考题
What is the most probable cause of reduced capacity in a reciprocating air compressor ________．A.Carbon on cylinder headsB.Faulty unloaderC.Leaking air valvesD.Plugged air cooler
考题
单选题The opening or closing of the cylinder starting valve is controlled by （）.A
the starting air distributorB
the cut-off valve on the air mainC
the main starting valveD
the air bottle control valve
考题
单选题Air scavenging of a diesel engine cylinder（）A
blows out the exhaust gasesB
supplies oxygen for combustionC
cools the valves and cylinder wallsD
all of the above
考题
单选题In addition to lubricating, cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner.A
additivesB
waterC
greaseD
acid solution
考题
单选题Condensate must be drained periodically from the air compressor receivers to prevent （）.A
second stage cylinder lockupB
oil sump contaminationC
faulty operation of pneumatic valvesD
corrosion of air receiver baffles
考题
单选题Air motion is induced in a four-stroke/cycle diesel engine cylinder to improve air fuel mixing, and is known as（）A
superchargingB
scavengingC
turbulenceD
swept volume charging
考题
单选题The weight of liquefied petroleum gas vapors as compared to air is（）.A
variableB
the sameC
lighterD
heavier
考题
单选题The air cylinder bottles in the survival craft should be refilled with（）.A
oxygenB
nitrogenC
compressed airD
nitrogen and oxygen
考题
单选题Pressurized air enters the cylinder via the inlet ports and pushes the remaining exhaust gas from the cylinder in a process known as “（）”.A
chargingB
super chargingC
scavengingD
exhausting
考题
单选题The term diesel engine scavenging means（）A
delivering more air into the cylinder than it would normally receive during an ordinary charging processB
forcing the products of combustion out of the cylinder with the fresh air chargeC
collecting the air charge at the cleanerD
combustion and expansion of hot gas
考题
单选题Opening of the cylinder （） will admit compressed air into the cylinder.A
safety valveB
indicator cockC
blow-down valveD
start valve
考题
单选题In the starting system, the automatic valve is controlled by（）, and the cylinder start valves are controlled by（）A
pilot air；pilot airB
handle；solenoidC
handle；pilot air coming through the distributorD
solenoid；pilot air coming through the distributor
考题
单选题Compressed air is supplied by air compression to （）.A
the air receiversB
the starting valvesC
the cylinder coversD
the distributors
考题
单选题（） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.A
The fuel oilB
The lube oilC
The sea waterD
The fresh water
考题
单选题（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A
An air receiverB
An operating valveC
An automatic valveD
An air distributor
考题
单选题The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, is called the（）.A
absolute humidityB
relative humidityC
specific humidityD
total humidity
考题
单选题What is the holding power ratio of an anchor? （）A
Maximum mooring line tension divided by the anchor's weight in airB
Anchor's weight in air divided by the maximum mooring line tensionC
Preloading tension divided by the anchor's weight in airD
Operating tension divided by the anchor's weight in air
考题
单选题In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.A
downwards；upwardsB
upwards；downwardsC
downwards；downwardsD
upwards；upwards
考题
单选题（） supplies pilot air to control the cylinder air start valves.A
An air compressorB
An indicator cockC
An air distributorD
A safety valve
考题
单选题（） the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuel.A
At the beginning of the compression strokeB
At the beginning of the suction strokeC
At the end of the working strokeD
At the end of the exhaust stroke
考题
单选题In the suction stroke air is induced into the cylinder （）In the compression stroke the air is compressed.A
by an fuel valveB
through an inlet valveC
with an exhaust valveD
from an outlet valve
考题
单选题When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.A
justB
nearlyC
merelyD
already
考题
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）A
noise coming from that air starting valveB
continuous operation of the starting air compressorC
zero air pressure in the air starting systemD
overheated starting air pipe to the cylinder head
考题
单选题CO2 cylinder weighed（）normal weight.A
light thanB
lighterC
lightD
lighter than
热门标签
最新试卷
