319、Acetone is a heavy duty degreaser suitable for metal preparation and removing grease from fabric covering prior to doping.

1004、This will be limited to the forward and aft edges of the windshield due to the bottom edge not being visible and the top edge having the busbar in the way.

1003、Airworthiness Directive is procedure that must be used when performing maintenance on an aircraft.

1002、The system interface circuits adapt to the physical properties of the connected systems.

1001、In a high concentration,this material is poisonous.

1000、The flight crew can use the flight director commands to control the attitude of the airplane.Be1

999、Do test A as an, alternative to test B

998、Care must be taken not to damage the firewall cover.

997、The topic sentence is then first and most important sentence in a paragraph.

996、The laptop has three primary parts.

995、The writing rules cover aspects of grammar and style.The dictionary gives the general words that a writer can use.