1.   The class would later serve Amelia in good stead, giving her her first practical knowledge of how engines worked.

2.   When he realized that one engine was not working, the pilot alerted air traffic control.

3.   The half-day courses include two hours practical experience of firing and driving with full instruction on safety and how the engine works.

4.   A young friend supplied a catalyst by asking him how a car engine works.

5.   But that does not mean that the gas engine must work double time.

6.   But travelers researching the outlines of a trip soon discover that search engines work best when you treat them like the white pages rather than the yellow pages.

7.   Each search engine works differently and has its own database of Web sites, so similar searches will produce different results depending on which search engine you use.

8.   Ever wonder how a four-stroke gasoline engine works?

9.   If people start plugging in hair dryers, portable televisions or even portable washing machines, the engine must work harder to recharge the battery.