
【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
查看答案&解析
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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