单选题Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.A spark plugsB glow plugsC heat of compressionD a magneto

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

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

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

Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.

A.entirely constant pressure

B.entirely constant temperature

C.a combination of constant volume and constant pressure

D.a combination of constant temperature and constant pressure

One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the_______.

A.governor sensitivity

B.exhaust temperature

C.fuel injection pressure

D.speed of the cam shaft

generally speaking, how many officers are there in the deck department?

_____, boys like footballs.

A: Generally speaking

B: General speaking

C: Generally spoken

D: Speaking generally

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