【名词&注释】
润滑油(lubricating oil)、空压机(air compressor)、液压油(hydraulic oil)
[单选题]发动机连续起动次数取决于()和()。
A. 空气瓶容积/空压机功率
B. 空气瓶容积/主机起动性能
C. 空压机功率/空压机台数
D. 空压机数量/空压机台数
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学习资料:
[单选题]在船上拆下来的针阀偶件应该用()浸泡清洗。
A. A.汽油
B. B.煤油
C. C.液压油
D. D.标准润滑油
[单选题]Smaller engines can be made more rigid than large ones and may not have ().
A. through bolts
B. dividing walls
C. sloping surfaces
D. relative angle
[单选题]The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to ().
A. avoid unnecessary pints inventory
B. keep torsional vibration constant
C. use existing supports and braces
D. maintain specified injection characteristic
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