海船船员考试

单选题It should be evident that the amount of fuel injected into the cylinder is dependent on the position of the helix relative to the （）.A inlet portB exhaust portC spill portD scavenge port

题目
单选题
It should be evident that the amount of fuel injected into the cylinder is dependent on the position of the helix relative to the （）.
A

inlet port

B

exhaust port

C

spill port

D

scavenge port

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相似问题和答案

第1题：

Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by

A.heat conduction into the injected fuel oil

B.heat conduction into the water jacket wall

C.water circulation through passages in the holder

D.fuel oil circulation through passages m the holder


正确答案：B

第2题：

When the fuel oil is burning in the combustion chamber, it _____.

A.gives up large amount of heat

B.gives off large amount of heat

C.gives up large amount of steam

D.gives off large amount of steam


正确答案：B

第3题：

Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.

A.prolong the ignition delay period

B.ensure the beginning of fuel injection

C.thoroughly utilize the air charge

D.allow controlled fuel combustion


正确答案：C

第4题：

单选题
On most diesel engines, the governor controls the output speed by （）.
A

controlling the amount of fuel injected into the cylinders

B

varying the speed of the turbocharger

C

adjusting the compression ratio

D

changing the timing of the fuel injection camshaft


正确答案： C
解析： 暂无解析

第5题：

单选题
When the fuel oil is burning in the combustion chamber, it （）.
A

gives up large amount of heat

B

gives off large amount of heat

C

gives up large amount of steam

D

gives off large amount of steam


正确答案： B
解析： 暂无解析

第6题：

When fuel is injected late into a diesel engine cylinder_______.

A.the exhaust will be clear

B.fuel consumption will be low

C.all the fuel will be burned at top dead center

D.fuel consumption will be high


正确答案：D

第7题：

单选题
When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）
A

quantity of fuel injected is decreased

B

quantity of fuel injected will always be increased

C

start of injection is advanced

D

duration of injection will always be greater


正确答案： C
解析： 暂无解析

第8题：

You should deposit a certain amount of money with a bank before you buy a house.

A．Right

B．Wrong

C．Doesn't say


正确答案：C
解析：文中第一段第一句只说When you buy a house, it is likely that you will be able to borrow a large part of the cost from a building society...并没有说应该在银行存上一笔钱。

第9题：

单选题
Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
A

spark plugs

B

glow plugs

C

heat of compression

D

a magneto


正确答案： A
解析： 暂无解析

第10题：

单选题
If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?（）
A

valve will open later

B

valves will close later

C

amount of fuel injected will be increased

D

amount of fuel injected will be decreased


正确答案： A
解析： 暂无解析

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