正确答案: C
C.首端上拱/负值增大
题目:艉机舱船装载后将会引起曲轴轴线发生()变形,臂距差的大小和方向呈()变化。
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学习资料的答案和解析:
[单选题]维修性包括()。Ⅰ.易拆卸性、可达性;Ⅱ.可还原性、通用性;Ⅲ.可互换性、适检性
Ⅰ+Ⅱ+Ⅲ
[单选题]换新薄壁轴瓦时,()的操作是错误的。
D.通过修刮瓦口调节瓦口扩张量
[单选题]废气涡轮增压器使柴油机的功率增加()倍。
1
[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]Bearing knocks are likely to occur from ().
bearing wear
[单选题]The lower end of each piston rod is reduced in diameter to fit a bore in (), this being secured to the piston rod by a nut.
the cross-head
[单选题]The piston moving up and down keeps the crankshaft ().
revolving
[单选题]Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent ().
contamination of the lube oil by water