Equipment should be tested and maintained for proper operation on a regular（).A、baseB

Before using or operating any equipment, you should first _____ its manual thoroughly and understand its contents_____.

During steering gear test should be moved through its full travel in both directions.A.pum

To avoid scavenge fires _____ the engine timing and equipment maintenance should be correc

听力原文：In what currency should the equipment be paid for？（A) US dollars. （B) 8, 000 doll

Why should we learn from tests and quizzes？A．To get the information we need to learn.B．To

The question was______the electrical equipment should be installed.A．thatB．whereC．whatD．wh