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【简答题】
在恒温下，将1.0L 200.0kPa N2和2.0L 300kPa O2充入容积为3.0L的真空容器后，O2的分压为______kPa。
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举一反三
【单选题】Aphrodite Co has a year end of 31 December and operates a factory that makes computer chips for mobile phones. It purchased a machine on 1 July 20X3 for $80,000 which had a useful life of ten years an...
A.
$9,000
B.
$8,000
C.
$8,263
D.
$8,500
【单选题】He operates the new machine as if he ______ special training in it.
A.
has received
B.
had received
C.
would receive
D.
received
【单选题】The CLU operates the drives attached of the machine ________ and receives feedback signals on the actual position and velocity of each one of the axes.
A.
lead-screws
B.
screws
【单选题】The electric machine that operates at sppeds above synchronous speed works in () region
A.
motoring
B.
generating
C.
plugging
D.
stopping
【简答题】The machine is eight years old, but it operates as if it (be) new.
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