（）in the open air has given you a good

1、Open the （）before starting an air comp

Open the （）before starting an air compressor.Aunload valveBcooling waterCoil cupDsum

2、A non-return valve in the air delivery

A non-return valve in the air delivery line near to the compressor must be （）type similar to the compressor discharge valve.Athe low inertiaBthe high inertiaCthe low velocityDthe high velocity

3、A yellow signal，floating in the air fr

A yellow signal，floating in the air from a parachute，about 300 feet above the water，indicates that a submarine（）.Awill be coming to periscop...

4、Air in the fuel lines of a diesel engi

Air in the fuel lines of a diesel engine can cause （）Aignition failureBoxygen corrosion of the fuel linesCthe pistons to seizeDblue smoke

5、Certkiller.com has given you the task

Certkiller.com has given you the task of serializing an object and writing it to a data file using binary serialization.You need to ensure that you meet these requirements.What should you do?（）ABCD

6、The air filter is fixed in the （） of a

The air filter is fixed in the （） of an air compressor.Ainlet pipeBoutlet pipeCinter coolerDafter cooler