正确答案: D
1—2年
题目:在制造技术和维护管理技术落后于船舶的技术发展时,船舶磨合期甚至可能延长至()。
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学习资料的答案和解析:
[单选题]近来超巴拿马型和巨大型集装箱船的发展带动了()动力装置的发展。
大缸径低速柴油机
[单选题]轴系校中完毕,要求实测中间轴承的负荷,允差为()。
20%
[单选题]更换艉轴承填料时的注意事项中不包括()。
D.按要求依次上紧压盖螺母
[单选题]舵系振动的原因可能是()。
舵承间隙过大
[单选题]用拉线法检查舵系中心线的状态时所使用的钢丝直径一般()。
不大于0.8mm
[单选题]Operating conditions in the crank chamber are very () those in the cylinder.
different from
[单选题]The cylinder and piston must be warmed up () to a temperature of about 140 degF in standing by engine.
gradually
[单选题]The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being ().
opened
[单选题]Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?()
Pressure