()is the disadvantage for air transportation?
- A Quick but not safe
- B Less frequency
- C It can’t lift heavy goods
- D the highest cost in all transport modes
()is the disadvantage for air transportation?
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1、The compressed air is admitted to each
The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its ().ABDCBTDCCBBDCDATDC
2、After the order “()” is given, the air
After the order “()” is given, the air system is shut down, the turning gear put in.AFinished with EngineBStop the EngineCStand-by EngineDSlow-down Engine
3、Air conditioning is the process of tre
Air conditioning is the process of treating air to control () its temperature, humidity, cleanliness and distribution to meet the comfort requ...
4、What is the disadvantage for air trans
What is the disadvantage for air transportation? ()A Quick but not safeB Less frequencyC It can’t lift heavy goodsD The highest cost in all transport modes
5、What is the primary disadvantage of a
What is the primary disadvantage of a permanent chain chaser system?()AIt requires anchor handling boats with more horsepowerBChain chasers work...
6、The air required for combustion is tak
The air required for combustion is taken from the engine room through a filter fitted on the turbochargerThis reduces the risk for too and contamination of the combustion air()Ahigh temperaturesBlow temperaturesCwetDdirty