Refrigeration machinery is often surve

1、（）is often described as the music of s

（）is often described as the music of speech—the way the voice goes up and down as we speak.

2、A person’s wealth is often in inverse

A person’s wealth is often in inverse proportion to their happiness.AequalBcertainClargeDopposite

3、Copper is often used as an electrical

Copper is often used as an electrical conductor because it （）.Ahas high resistance at low temperaturesBhas a highly polished surfaceCis able to pass current with little oppositionDholds insulation together well

4、what is machinery of

what is machinery of aaa configure？

5、Cylinder liner cooling is often referr

Cylinder liner cooling is often referred to as （）.Apiston coolingBsleeve coolingCcentral coolingDjacket cooling

6、If a refrigeration compressor is short

If a refrigeration compressor is short cycling on high head pressure, you should （）.Apurge the condenser if the waterside is dirtyBcheck for ...