第1题:
A crack in a cylinder liner can be caused by
A.worn piston rings
B.installation of undersized sealing rings
C.operating the engine at low loads
D.restricted cooling water passages
第2题:
第3题:
第4题:
水力裂缝形态有()。
第5题:
裂缝抢险中裂缝的分类为()
第6题:
按裂缝的走向分类有()三种。
第7题:
按裂缝的深度划分,裂缝可分为()。
第8题:
贯穿裂缝、深层裂缝和表面裂缝
微观裂缝和宏观裂缝
粘着裂缝、水泥面裂缝和骨料裂缝
以上都不是
第9题:
第10题:
cutting a square notch at each end of the crack
drilling a hole at each end of the crack
slot-welding the crack
welding a doubler over the crack
第11题:
raised flange at the main deck edge
riveted crack arrester strap on all-welded ships
riveting pattern most commonly used in ship construction
row of plating nearest the keel
第12题:
沉陷裂缝、干缩裂缝、滑坡裂缝
表面裂缝、内部裂缝、冻胀裂缝
横向裂缝、纵向裂缝、龟纹裂缝
水平裂缝、垂直裂缝、交叉裂缝
第13题:
A crack in the deck plating of a vessel may be temporarily prevented from increasing in length by___________.
A.cutting a square notch at each end of the crack
B.drilling a hole at each end of the crack
C.slot-welding the crack
D.welding a doubler over the crack
第14题:
第15题:
第16题:
裂缝按其走向可分为横向裂缝、纵向裂缝、()。
第17题:
crack表示中文()。
第18题:
浆砌石建筑物裂缝按产生裂缝的原因,可分为()。
第19题:
a damaged pneumercator line
a puncture, crack, or hole in the skin of the vessel
improper record keeping of fuel transfer activities
contamination of the contaminated steam supply system
第20题:
a leaking seal ring
heat transfer from exhaust valves
restricted cooling passages
overheated intake valves
第21题:
excessive piston to liner clearance
excessive dirt beneath the piston crown that reduces heat transfer
faulty nozzle spray
all of the above
第22题:
corrosion fretting
insufficient lubrication
abnormal wear
fatigue failure
第23题:
welding brackets across both ends of the crack
chipping out and slot welding the entire crack
drilling a hole at each end of the crack
cutting a square notch at each end of the crack