题目内容
词汇与结构Reservoirs in hydraulic systems which require a reserve of fluid for the emergency operation are ________ with standpipes in the bottom to retain the amount of fluid required for emergency operation.
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词汇与结构When system fluid is lost, emergency fluid is draw from the bottom of the________.
词汇与结构The engine driven ________ which is directly coupled to the engine will operate when the engine is running.
词汇与结构It draws fluid from the reservoir and ________ it to the system through the filter and a check valve and the system pressure can be built up.
词汇与结构The engine driven pumps are used in main hydraulic ________ systems.
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