【名词&注释】
柴油机(diesel engine)
[单选题]Expansion tank should be used to remove () from cooling water.
A. scale
B. sludge
C. chemicals
D. air
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学习资料:
[单选题]防止拉缸的工艺措施主要是()。Ⅰ.保证活塞运动装置的安装精度;Ⅱ.保证活塞运动装置的对中性;Ⅲ.采用波纹加工;Ⅳ.采用精车加工;Ⅴ.采用研磨加工。
A. A.Ⅰ+Ⅱ
B. B.Ⅰ+Ⅳ+Ⅴ
C. C.Ⅱ+Ⅲ
D. D.Ⅰ+Ⅱ+Ⅲ
[单选题]活塞运动部件在船上安装前,应在车间平台对其位置精度进行复验,以保证()。
A. 顺利安装
B. 其与固定件的对中性
C. 其与曲轴的正确安装
D. 柴油机可靠运转
[单选题]艉轴管本件在船上安装后应进行()水密试验。
A. 艉轴管
B. 尾尖舱
C. 艉轴承
D. 货舱
[单选题]油润滑艉轴承Simplex密封装置的损坏主要发生在()上。
A. 中间环
B. 橡胶环
C. 防蚀衬套
D. 橡胶环和防蚀衬套
[单选题]Oil pressure in the lubrication system is () the static sea water head to ensure that sea water () the stem-tube.
A. lower than;can lubricate
B. lower than;can cool
C. higher than;can enter
D. higher than ;cannot enter
[单选题]The selection of an oil depends () on the operating conditions, the design of the engine and the type of fuel to be burned.
A. to a great extent
B. on a great extent
C. on mainly
D. on only
[单选题]The pH value of water in a diesel engine closed cooling water system should be maintained between ().
A. 60 to75
B. 80 to 95
C. 100 to 115
D. 120 to 135
[单选题]How would the exhaust of a properly operating diesel engine appear?().
A. Light blue haze
B. Light brown haze
C. Light gray haze
D. Perfectly clear
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