Аэроплан совершал перелёт из одного пункта в другой со средней скоростью 180км.ч. Если бы его скорость была 200км.ч,

Укажите типы предложений conditional sentences

1)   If the starter motor is in order, it will start after the first or the second attempt.

2)   If we use good lubricants in the rubbing joints, the mechanisms run without breaking down for a long time.

3)   Any units of any automobile work for a longer time if they are made of higher-quality materials.

4)   If the air is not cleaned properly, the engine inhales too much dust with the resultant damaging of the injection system components.

5)If we test any material, we can use it in our research