【名词&注释】
设计阶段(design stage)、船舶动力装置(marine power plant)、中心线(center line)、巴氏合金(babbitt alloy)、性问题(sex problem)、铜铅合金(copper-lead alloy)
[单选题]Before replacing a piston you should check the rings to see that all clearances and gaps are () the permissible tolerances.
A. above
B. at
C. over
D. withi
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学习资料:
[单选题]保证和提高船舶动力装置的可靠性问题(sex problem),将贯穿在()。Ⅰ.整个设计阶段;Ⅱ.整个制造阶段;Ⅲ.全部运转期间
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅰ十Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
[单选题]连杆大小端轴承孔平台检验时应检查二者的中心线的()。
A. 垂直度
B. 在垂直平面和水平平面内的平行度
C. 平行度
D. 同轴度
[单选题]在柴油机已装活塞运动部件的情况下测量臂距值时,为了准确测量臂距值()。
A. 盘车一周应测完5个数值
B. 测量中拐挡表安装次数不限
C. 柴油机停机后即可测量
D. 可在任意位置开始测量
[单选题]船轴不包括()。
A. 推力轴
B. 中间轴
C. 艉轴
D. 曲轴
[单选题]油润滑艉轴承的轴承材料一般选用()。
A. 巴氏合金
B. 铜铅合金(copper-lead alloy)
C. 铜锡合金
D. 高锡铝合金
[单选题]At the top of the A-frames there is a strong cast iron frame called ().
A. cylinder liner
B. cylinder cover
C. the gear box
D. the scavenging box
[单选题]The main bearing shells often have a thin () of lead or indium to provide a layer giving protection against corrosion.
A. flange
B. flash
C. plate
D. sheet
[单选题]You increased the () to 150 tons that’s why the fuel oil ().
A. pumped speed;came out
B. pumping rate;overflowed
C. flowing rate;leaked out
D. flowed speed;spilled out
[单选题]Which of the following statements concerning fire-tube boilers is correct?()
A. Combustion gases flow through the tubes
B. Flames impinge on the tubes
C. Combustion occurs in the tubes
D. Water flows through the tube
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