Which of the following statements describes the functions of a reservoir used in a hydraulic system?()
A non-return valve in the air delivery line near to the compressor must be ()type similar to the compressor discharge valve.
If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be()
The compressed air is supplied by () to the air reservoirs.
Starting air for auxiliary engines may be taken directly from the main reservoirs or through ().
Most air conditioning units have () for adjusting the ratio of recirculated fresh airCare must be taken not to reduce the fresh air so that stuffiness or smells arise.
The soot blowers are operating in the oil fuel boiler the air/fuel ratio must () throughout the action, and blowers greased after use.
The quantity of cooled air delivered by an air conditioning unit should () the sum of the quantity of air re-circulated to the unit and the quantity mechanically exhausted.
Condensate must be drained from the intercooler and after-coolers of an air compressor because ().
Condensate must be drained periodically from the air compressor receivers to prevent ().
In heavy marine engine the practice is to drive the engine on()which has previously been stored in starting air reservoirs.
Before starting an engine by air, the engine must()
Air reservoirs are designed, built and tested similarly to ().
A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must ()
The loss of () from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.
In the suction stroke air is induced into the cylinder ()In the compression stroke the air is compressed.
Usually,an Air Waybill is non—negotiable,that is,the goods must be sent to the consignee titled in the Air Waybill.()
Usually, the AWB is non-negotiable, the goods must be sent to the()titled inthe air waybill.
Usually, the AWB is non-negotiable, the goods must be sent to the()titled in the air waybi
英语翻译 A pneumatic drop with a manual shutoff valve and regulator for the air connection must be installed.
In heavy marine engine the practice is to drive the engine on____ which has previously been stored in starting air reservoirs.
Which information must be contained in, or attached to, the dispatch release for a flag air carrier flight?
听力原文:M: It's like an oven here. You must be roasting. Can I open a window and get some fresh air in?
The movement of freight by air is more complicated than the movement of passengers by air.The movement of freight by air is more complicated than the movement of passengers by air.()