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【单选题】
Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is________.A.
a combination of constant volume and constant pressure
B.
a combination of constant temperature and constant pressure
C.
entirely constant pressure
D.
entirely constant volume
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【简答题】We both
spent a ( ) weekend
【简答题】[填空题] 读下面一段Tim 和Sara对话,选择正确的图片代码回答问题。 Tim : Hi! Sara. What did you do last weekend? Sara: Hi! Tim. I watched a football match in the gym. Tim : Whom did you go with? Sara: My best friend Tina and ...
【简答题】读下面一段Tim 和Sara对话,选择正确的图片代码回答问题。 Tim : Hi! Sara. What did you do last weekend? Sara: Hi! Tim. I watched a football match in the gym. Tim : Whom did you go with? Sara: My best friend Tina and Denny....
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