【名词&注释】
开口销(split pin)、中心线(center line)、成本低(low cost)
[单选题]Increasing the temperature of a fuel will reduce its ().
A. viscosity
B. pressure
C. resistance
D. setting point
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[单选题]在检修连杆大端轴承时,必须换新的是()。
A. 螺栓和螺母
B. 轴承上瓦
C. 防松垫片或开口销
D. 调整垫片
[单选题]一般来说,轴系中心线的同轴度偏差是由于()造成的。
A. 曲轴过度磨损
B. 主轴承过度磨损
C. 海损事故
D. 艉轴过度磨损
[单选题]平板形舵具有()的特点。Ⅰ.结构复杂;Ⅱ.便于修造;Ⅲ.舵效高;Ⅳ.舵效低;Ⅴ.成本低。
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅳ+Ⅴ
C. Ⅱ+Ⅳ+Ⅴ
D. Ⅰ+Ⅲ+Ⅳ
[单选题]The () or balance tank collects the re-circulated fuel oil.
A. buffer
B. sump
C. bilge
D. overflowing
[单选题]The abbreviation BDC means ().
A. Boston Diesel Company
B. base circle diameter
C. switch board case
D. bottom dead center
[单选题]Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the ().
A. wheelhouse control station
B. engine room control station
C. captains office
D. chief engineers office
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