【名词&注释】
玻璃钢(frp)、动力装置(power plant)、异常现象(abnormal phenomena)、燃油消耗量(fuel consumption)、柴油机气缸套(engine cylinder liner)、消耗量指标(indication of consumption)、二冲程柴油机(two-stroke diesel engine)、穿透性裂纹、冷却水温(cooling water temperature)、曲轴箱油(crankcase oil)
[单选题]舵系振动的原因可能是()。
A. 舵承间隙过小
B. 舵承间隙过大
C. 舵杆变形
D. 舵杆折断
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学习资料:
[单选题]船舶每海里燃油消耗量指标考虑了()。Ⅰ.动力装置本身的性能;Ⅱ.船舶的航行性能
A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ十Ⅱ都对
D. Ⅰ,Ⅱ都不对
[单选题]现代柴油机排烟温度下降,不利于废气锅炉的余热利用,因此规定废气锅炉设计的标定工况是:废气锅炉排气进口温度t1为()℃,出口温度t2为()℃。
A. 400/300
B. 300/200
C. 255/188
D. 200/165
[单选题]二冲程柴油机(two-stroke diesel engine)气缸套产生穿透性裂纹,柴油机运转时就会发现()异常现象。
A. A.冷却水温(cooling water temperature)度升高
B. B.膨胀水柜水位波动
C. C.滑油乳化变质
D. D.曲轴箱油(crankcase oil)位升高
[单选题]某曲柄的两主轴承在水平平面内位置偏左,曲轴轴线呈左拱形,则其Δ-()。
A. >0
B. <0
C. =0
D. 不一定
[单选题]水润滑式艉轴工作轴颈包覆(),非工作轴颈包覆()。
A. 铜套/塑料
B. 橡胶套/塑料
C. 玻璃钢套/橡胶
D. 铜套/玻璃钢
[单选题]平板形舵可作成()。Ⅰ.平衡舵;Ⅱ.穿心舵轴平衡舵;Ⅲ.半平衡舵;Ⅳ.不平衡舵;Ⅴ.完全平衡舵。
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅳ+Ⅴ
C. Ⅲ+Ⅳ+Ⅴ
D. Ⅰ+Ⅲ+Ⅳ
[单选题]The quantity of oil injected into the cylinder can be regulated ().
A. by turning the pump plunger
B. by vary the fuel valve spring force
C. by no means by controlling the governor
D. by enlarging or diminishing the injection hole
[单选题]The sequence of fuel injection into cylinders is determined by ().
A. the steering
B. the driven gear
C. the turning gear
D. the timing gear
[单选题]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()
A. Defective temperature controls in the system
B. Cavitation in the cooling water pump
C. Opened vent in the cooling system
D. Restricted water passages in the engine
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