【名词&注释】
一次性(disposable)、二冲程柴油机(two-stroke diesel engine)、废气涡轮机、绝热过程(adiabatic process)、等温过程(isothermal process)、等压过程(isobaric process)、运行时(run-time)
[单选题]某水泵运行时(run-time)进口压力为0.05MPa，排出口压力为0.25MPa，则水泵的扬程约为( )(设1MPa≈100m水柱高)。
A. 20m
B. 25m
C. 30m
D. 35m
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举一反三：
[单选题]废气涡轮机的实际压缩过程是( )。
A. 多变过程
B. 等温过程
C. 等压过程(isobaric process)
D. 绝热过程
[单选题]All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible ____ to prevent such pollution, particularly within the framework of relevant international and port regulations.
A. steps
B. procedures
C. precautions
D. programs
[单选题]二冲程柴油机的换气过程包括的阶段有()
A. 自由排气阶段
B. 强制排气与扫气阶段
C. 过后排气阶段
D. A+B+C
[单选题]_____ shows 1.2 meter and the specific gravity of the oil is 0.96According to the measuring scale, that makes 150 tons.
A. The piston rod
B. The push rod
C. The sounding rod
D. The connecting rod
[单选题]向机舱内释放二氧化碳时应：
A. 一次性释放完毕
B. 分两次释放，先多、后少。
C. 先少、后多。
D. 逐渐连续释放
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