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单选题The two strokes of a two-stroke/cycle diesel engine are （）A power and intakeB intake and exhaustC exhaust and compressionD compression and power

题目
单选题
The two strokes of a two-stroke/cycle diesel engine are （）
A

power and intake

B

intake and exhaust

C

exhaust and compression

D

compression and power

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相似问题和答案

第1题：

单选题
In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the （）.
A

starting air and fuel pumps

B

piston cooling pumps

C

exhaust valves

D

all of the above


正确答案： A
解析： 暂无解析

第2题：

单选题
The size of the exhaust valve opening is （）
A

most critical in a four-stroke cycle diesel engine

B

most critical in a two-stroke/cycle diesel engine

C

most critical in a four-stroke/cycle diesel engine if it is turbocharged

D

of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine


正确答案： A
解析： 暂无解析

第3题：

单选题
Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of （）
A

less even torque

B

higher cylinder head temperatures

C

fewer power strokes per revolution

D

greater weight/size requirements


正确答案： A
解析： 暂无解析

第4题：

单选题
The exhaust system for a turbocharged two-stroke/cycle diesel engine functions to（）
A

discharge exhaust gases and smoke

B

furnish energy to the turbocharger

C

reduce engine room noise

D

all of the above


正确答案： C
解析： 暂无解析

第5题：

单选题
In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）
A

air intake

B

a fuel outlet

C

cooling water inlets

D

exhausting combustion gas


正确答案： D
解析： 暂无解析

第6题：

单选题
When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of （）
A

insufficient lubrication

B

improper piston cooling

C

blow-by

D

overload operation


正确答案： B
解析： 暂无解析

第7题：

单选题
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A

Exhaust and scavenging

B

Scavenging and compression

C

Ignition and expansion

D

Exhaust and compression


正确答案： A
解析： 暂无解析

第8题：

单选题
The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）
A

one half crankshaft speed in a two-stroke cycle diesel engine

B

crankshaft speed in a two-stroke cycle diesel engine

C

two times crankshaft speed in a two-stroke cycle diesel engine

D

one-fourth times crankshaft speed in a four-stroke cycle diesel engine


正确答案： A
解析： 暂无解析

第9题：

单选题
What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
A

White

B

Black

C

Blue

D

Clear


正确答案： B
解析： 暂无解析

第10题：

单选题
Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）
A

bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversed

B

bearing pressure in a two-stroke/cycle single acting diesel engine is continually reversed

C

the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine

D

two-stoke/cycle diesel engines require more complicated lubrication piping


正确答案： B
解析： 暂无解析

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