
【名词&注释】
轴功率(shaft power)、救生艇(boat)、二冲程柴油机(two-stroke diesel engine)、救生衣(life jacket)、四冲程(four-stroke)、内径千分尺(inside micrometer)
                            
                                                                                         
                                                                    
                                                                     [单选题]环槽磨损是采用_______进行测量
                                                                                                
                                  A. 样板 
  B. 内径千分尺(inside micrometer) 
  C. 塞尺 
  D. 样板和塞尺 
 
                                    
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                                                                    举一反三:
                                                                    
                                                                         
                                    
                                     [单选题]船员及旅客的救生衣应存放在:
                                                                                                            
                                            A. 床位附近 
  B. 锁在衣柜里 
  C. 救生艇里 
 
                                                                    
                                    
                                     [单选题]In discussing oil pollution, one important fact to remember is that the problem remains the same( )heavy( )light oil is spilled into the water.
                                                                                                            
                                            A. both/and 
  B. whether/or 
  C. neither/nor 
  D. because/so 
 
                                                                    
                                    
                                     [单选题]在气缸容积与转速相同的情况下,二冲程柴油机功率不能达到四冲程(four-stroke)机功率的两倍的原因是()
                                                                                                            
                                            A. 换气质量差 
  B. 有效膨胀行程缩短 
  C. 扫气泵消耗轴功率 
  D. A+B+C 
 
                                                            
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