1．A ____________ may be necessary to establish the complaint.
alternator
road test
air-brake system
repair
2．Touch is a good way of testing/checking running conditions, pipes and cables feel for vibration.
对
错
3．Be sure you understand the nature of the complaint and collect all possible information relating to the concern.
无需了解投诉的性质，也不用收集与问题相关的信息。
无需了解投诉的性质，只需收集与问题相关的信息。
确保了解投诉的性质，并收集与问题相关的所有可能信息。
确保了解投诉的性质，并收集与问题无关的信息。
