【名词&注释】
润滑油(lubricating oil)、液压油(hydraulic oil)、二冲程柴油机(two-stroke diesel engine)、柴油机动力装置(diesel power plant)、可利用(can use)、四冲程柴油机(four-stroke diesel engine)
[单选题]在四冲程柴油机(four-stroke diesel engine)动力装置中,废气锅炉的排气进口温度t1约为400℃大约可利用(can use)排气余热的(),而二冲程柴油机动力装置的t1为200—3O0℃,则可利用(can use)排气余热的()左右。
A. 62%/30%
B. 62%/40%
C. 40%/62%
D. 30%/62%
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学习资料:
[单选题]液压拉伸器液压系统中绝对不可使用()作为液压油。
A. 纯净液压油
B. 系统润滑油
C. 汽缸油
D. 系统润滑油或汽缸油
[单选题]压气机叶片损伤是由于()造成的。Ⅰ.轴承严重磨损;Ⅱ.吸入硬质颗粒;Ⅲ.气流冲击;Ⅳ.振动;Ⅴ.碰撞。
A. Ⅱ+Ⅳ
B. Ⅰ+Ⅱ+Ⅴ
C. Ⅲ+Ⅳ+Ⅴ
D. Ⅰ+Ⅱ+Ⅳ+Ⅴ
[单选题]After the engine is warned, we should() the turning gear before starting up the engine.
A. take in
B. put in
C. take out
D. put u
[单选题]Compressed air is supplied by air compression to ().
A. the air receivers
B. the starting valves
C. the cylinder covers
D. the distributor
[单选题]The lubricating pipes and dusts should be blown out with ().
A. atmosphere
B. the fresh water
C. compressed air
D. chemical compound
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