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【单选题】
某主机在航行途中,突然出现单缸排烟温度降低,并伴随主机转速下降、高压油管无脉动,则可能的原因是( )。A.
某缸高压油泵柱塞卡死在最高位置
B.
某缸喷油器针阀卡死在关闭位置
C.
某缸喷油器针阀卡死在关闭位置
D.
某缸高压油泵柱塞套筒磨损严重
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【简答题】S1:What is the latest gale warning?S2:The Winds in that area from direction northwest and force Beaufort 8 veering to north.Q:What's the wind direction?A. north veering to northeast. B. northeast veer...
【简答题】无差异营销战略
【单选题】The accelerating force of the wind on a small 200-kg sailboat is 707 N northeast. If the drag of the keel is 500 N acting west, what is the acceleration of the boat?
A.
1.5 m/s^2 due east
B.
2.5 m/s^2 due north
C.
3.0 m/s^2 northeast
D.
2.0 m/s^2 north by northwest
E.
none of these
F.
1.0 m/s^2 north by northwest
G.
3.5 m/s^2 northeast
【简答题】S1:What is the latest gale warning in area Ferrol?S2:The winds in that area from direction northeast and force Beaufort 8 backing to north.Q:What's the wind direction?A. north veering to northeast. B....
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