16) In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.

Correct

Incorrect

Answer is:

Correct

30 Degree before top dead center

30 Degree after top dead center

30 Degree before bottom dead center

30 Degree after bottom dead center

Answer is:

slow down the speed of fast moving neutrons

control the reaction

reduce the temperature

extract heat from nuclear reaction

Answer is:

heavy water

graphite

carbon dioxide

no moderator is needed

Answer is:

pre-ignition period

delay period

period of ignition

burning period

Answer is: