题目内容

Inanoilywaterseparatortheoilwilltravel（）totheoilcollectingspaces.

A. upwards
B. downwards
C. outwards
D. forwards

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Whenstarted,acompleteoilywaterseparatingunitisfirstfilled（）Theoilywatermixtureisthenpumpedthroughtheinletpipeintothecoarseseparatingcompartment.

A. withdirtywater
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A. approves
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C. allows
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