【名词&注释】
螺旋桨(propeller)、环氧树脂(epoxy resin)、进出口(import and export)、故障率(failure rate)、续航力(endurance)、船舶动力装置(marine power plant)、海洋污染(marine pollution)、锅炉蒸发量
[单选题]对偶然故障期的错误表述是()。
A. 在偶然故障期内故障率变化较小
B. 偶然故障期是产品最佳状态期,可通过合理维修而延长
C. 在偶然故障期内产生的故障可以进行预测
D. 偶然故障期故障是可靠性着重要研究的故障
查看答案&解析
查看所有试题
学习资料:
[单选题]可靠性对船舶动力装置(marine power plant)具有特别重要的意义,可靠性不足会()。
A. 导致海损和海洋污染(marine pollution)
B. 降低营运效益
C. 降低续航力
D. A+B
[单选题]与废气锅炉蒸发量D有正确关系的是()。
A. 蒸汽焓值h越高,蒸发量D越大
B. 废气锅炉废气进出口温差(t1-t2)越小,蒸发量越大
C. 废气锅炉废气进口温度t1越高,蒸发量越大
D. 主机排气流量G越大,燕发量越小
[单选题]柴油机气缸盖的结构特点是()。Ⅰ.结构复杂;Ⅱ.阀件多;Ⅲ.孔道较多;Ⅳ.受热不均;Ⅴ.壁厚不均。
A. Ⅱ+Ⅲ+Ⅴ
B. Ⅰ+Ⅲ+Ⅴ
C. Ⅰ+Ⅲ
D. Ⅲ+Ⅴ
[单选题]沿海及内河的船舶的螺旋桨直径D<4.5m时,螺旋桨和艉轴允许采用()方式连接。
A. 无键环氧树脂
B. 有键环氧树脂
C. 机械连接
D. 油压套合连接
[单选题]() device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.
A. An automatic
B. A transmission
C. A self-regulating
D. An interlocking
[单选题]() should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.
A. The watch keeping personnel
B. The chief engineer
C. The person on a bunker barge
D. Any of the above
[单选题]The cap and new shell are tightened up and then removed and the thickness of the wire measured by ().
A. a bridge gauge
B. a micrometer
C. a thermometer
D. a indicator
[单选题]Valve gear knocks are more easily located while the engine ().
A. is running
B. stops
C. is repaired
D. lacks of oil
本文链接:https://www.51bdks.net/show/oyow55.html