A、keeping the fuel tanks topped off
B、increasing the free surface effect
C、keeping the fuel tanks at least half MI
D、keeping at least one fuel tank empty for slops
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A、A.Sure. Here you are. B、B.I have no idea. C、C.It‘s far from here. D、D.Sorry, I‘ve forgotten
A、compressor lubrication will be improved B、oil will not leave the crankcase C、compressor valves will be damaged D、oil may congeal in the evaporator
A、Pleased to meet you ,too. B、How do you do? C、I've heard about you. D、The pleasure is mine
A、I’m so happy! B、No, I’m not good at studying. C、Yes. May I succeed. D、Thank you, the same to you.
A、I moved here from Paris. B、My whole life. C、I‘ve worked here for almost 10 years. D、I‘ve never traveled there.
A、A. What do you want? B、B. May I come in? C、C. What do you do? D、D. May I know your name?
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