汽车中级维修电工理论复习资料 （Car intermediate maintenance electrician theory review materials ）.doc

汽车中级维修电工理论复习资料 (2)（Car intermediate maintenance electrician theory review materials (2)） Intermediate automobile maintenance electrician review materials (B) Fill in the blanks. 1. winter should be in the premise of ensuring the electrolyte is not frozen, as possible as the density of electrolyte. When distilled water is added, it should be carried out under the condition. 2. the charging process of lead-acid batteries is a process of conversion. 3. when the generator is in normal operation, it shall not be used to check whether it is generating electricity. 4. after the engine starts, you must immediately release the start pedal or the start button to start the machine. 5. the gap of the breaker is usually on. 6. one of the methods of ignition timing is parking inspection. Start the engine, idle rotation, when the water temperature rises to 70~80 degrees C, suddenly increase the speed, if the engine only a slight knock, that is. Without knocking, and not with the throttle opening speed increases, a stuffy feeling, and chug in the exhaust pipe, said ignition; A sudden, prolonged, metallic knocking of the engine, indicating ignition. 7., electronic ignition is actually the use of semiconductor devices as switches, or primary currents, It is also called semiconductor ignition or transistor ignition. 8. electronic ignition device, according to the principle of the signal generator, can be divided into magnetic transistor points A fire device, a transistor ignition device, a transistor ignition device, and a contactless transistor ignition device. 9. Holzer sensors consist of Holzer and. 10. charging conditions must be available:. Two, multiple-choice questions. 1. the engine works normally at low and moderate speeds, and fires at high speeds. (A) the gap between the contacts of the breaker is too small, the spark plug gap is too large: (B) the gap between the contacts of the breaker is too large, the spark plug gap is too small: (C) the capacitor is damaged. 2., each c