More than one stage of evaporation can take place by admitting the sea water into chambers with progressively () pressure in the flash evaporator.
A、lower
B、higher
C、the lower
D、the higher
A、lower
B、higher
C、the lower
D、the higher
A、the after one is more than forward one B、the forward one is more than after one C、the forward one is the same with after one D、it depends on the type of engine
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A、High pressure compressors are more efficient than low pressure compressors B、Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit C、Two stage compressors are generally more efficient than single stage compressors D、The volumetric efficiency is decreased in multistage compressors
A、more than one bone is broken B、the same bone is broken in more than one place C、there is never any internal bleeding D、the bone may be visible
A、Loss should be no more than 1 percent. B、One-way latency should be no more than 150 ms C、Jitter should be no more than 30 ms D、Loss should be no more than 3 percent E、One-way latency should be no more than 150/2=75 ms F、Jitter should be no more than 300 ms
A、就应变部署表中的任务分配而言,一人可以多职,一职也可以多人。 B、就应变部署表中的任务分配而言,一人可以一职,一职也可以多人。 C、就应变部署表中的任务分配而言,一人可以多职,一职也可以宜人。 D、就应变部署表中的任务分配而言,一人可以有多职。