1.  same

2.  less

4.  variable

1.  1500 rpm

3.  3000 rpm

4.  any value independent of engine speed

2.  wears less

3.  absorbs shocks

4.  is stronger

1.  Otto cycle

2.  Diesel cycle

4.  Carnot cycle

1.  same

3.  less

4.  less or more depending on operating conditions

2.  less efficient

3.  equally efficient

4.  unpredictable

1.  more

3.  same

4.  more/less depending on capacity of engine

1.  minimum

2.  maximum

3.  zero

1.  1 sec

2.  0.1 sec

3.  0.01 sec

1.  piston ring and cylinder wear

2.  formation of hard coating on piston skirts

3.  oil sludge in the engine crank case