Chapter 5 multiple choice

Thermal conductivities of thermal conductors are _______ that of thermal insulators.

• higher than

• lower than

• the same as

In the intake stroke of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the compression stroke of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the explosion process of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the power stroke of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the valve exhaust process of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the exhaust stroke of a gasoline engine, the piston _______.

• moves up

• moves down

• does not move

In the exhaust stroke of a gasoline engine, the pressure in the ignition chamber is _______ the outside pressure.

• sufficiently larger than

• sufficiently lower than

• the same as