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【单选题】
下列四,属于筒形活塞式柴油机特点的是( )。A.
活塞下部空间与曲轴箱是隔开的
B.
活塞与缸套承受侧推力,横向磨损大
C.
活塞与缸套间采用注油润滑
D.
活塞通过活塞杆与连杆相联接
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皮皮学刷刷变学霸
举一反三
【单选题】The latest known details of lights are given in（）.
A.
gives daily predictions of the times and heights of high and low water for a selection of Standard Ports
B.
lists the principal harmonic constants for all those ports where they are known，for use for prediction by the Simplified Harmonic Method of Tidal Prediction
C.
is a comprehensive guide for the yachtsman
D.
permits the mariner to select and simultaneously calculate tidal heights for multiple ports for up to seven days
【简答题】Why do men die earlier than women? The latest research makes it known that the reason could be that men’s hearts go into rapid decline（下降） when they reach middle age. The largest study of the effects ...
【简答题】Why do men die earlier than women? The latest research makes it known that the reason could be that men’s hearts go into rapid decline when they reach middle age. The latest study of the effects of ag...
【简答题】“花儿”因为流传地域不同，其语言风格、音乐曲调和演唱形式都有所区别。以生动形象的比兴起句，文辞优美，格律严格，曲调悠扬，长于抒情的是（）。
【单选题】The latest known details of lights are given in ______.
A.
Admiralty List of Lights and Fog Signals
B.
Admiralty List of Radio Signals
C.
Admiralty Maritime Communications
D.
NP 290
【简答题】欧阳修词雅俗并存的创作特征
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