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【单选题】
船舶对水航程SL,对地航程S G ,船速V E ,航时t,若S L A.
顺风顺流
B.
顶风
C.
顺风
D.
顶风顺流
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皮皮学刷刷变学霸
举一反三
【简答题】A．The well. B．The wheels. C．The ears. D．His ears.
【单选题】"Trade agreements grease the wheels of importing and exporting". The phrase "grease the wheels" means .
A.
to keep the balance of something
B.
to make something go well or go on smoothly
C.
to interfere with the development of something
D.
to negotiate about something
【简答题】简述 制冷剂的压焓图的“一点”、“三区”、“五态”、“八线”分别是什么含义?
【单选题】We can learn from the text that the wheels of the Grout Portable .
A.
were difficult to separate
B.
could be split into 6 pieces
C.
were fitted with solid tyres
D.
were hard to carry on a train
【单选题】The carried power from the engine crankshaft to the car wheels so the wheels rotate and car moves.
A.
steering system
B.
running system
C.
power train
D.
brake system
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