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【单选题】
In the compression stroke, one main difference between a diesel engine and a petrol engine is that ______. A the air is compressed in the sealed cylinder in the diesel engineB.
the petrol engine has a comparatively very low compression ratio
C.
combustion occurs by spark ignition in the diesel engine
D.
Both A and B
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举一反三
【简答题】There live______prisoners in Cottonville.
【简答题】“应急救护人员”（即第一反应人）是指[填空(1)] 的人。A. 在现场能够为伤病员实施应急救护的人
【简答题】A．slaves B．male C．female D．prisoners
【单选题】What happened to the prisoners who tried to escape ?
A.
All of them were caught and put back to prison.
B.
All of them were caught and were killed right away.
C.
The five missing prisoners were ually found.
D.
The five missing prisoners were assumed to have died.
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