裂缝（crack；fissure）
裂缝（crack；fissure）
相关考题：
The drivers were killed in a head－on ( ) involving a number of cars on the main road into town. A. crashB. collisionC. clashD. crack
A crack in a cylinder liner can be caused byA.worn piston ringsB.installation of undersized sealing ringsC.operating the engine at low loadsD.restricted cooling water passages
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 crackB.drilling a hole at each end of the crackC.slot-welding the crackD.welding a doubler over the crack
（2017年真题）裂缝对混凝土结构的危害性由大到小的排列顺序是（ ）A.贯穿裂缝、深层裂缝、表面裂缝B.深层裂缝、表面裂缝、贯穿裂缝C.贯穿裂缝、表面裂缝、深层裂缝D.深层裂缝、贯穿裂缝、表面裂缝
My watch fell down on the ground and there was a hairline crack in the( )of dial plate. A.frontier B.boundary C.limit D.rim
单选题If fuel tank levels are found to have increased after a grounding, you should suspect （）.Aa damaged pneumercator lineBa puncture, crack, or hole in the skin of the vesselCimproper record keeping of fuel transfer activitiesDcontamination of the contaminated steam supply system
单选题A diesel engine cylinder head can crack as a result of （）Aa leaking seal ringBheat transfer from exhaust valvesCrestricted cooling passagesDoverheated intake valves
单选题A diesel engine piston crown can crack from （）Aexcessive piston to liner clearanceBexcessive dirt beneath the piston crown that reduces heat transferCfaulty nozzle sprayDall of the above
单选题A crack in the deck plating of a vessel may be temporarily prevented from increasing in length by（）.Acutting a square notch at each end of the crackBdrilling a hole at each end of the crackCslot-welding the crackDwelding a doubler over the crack
单选题Small crack in the crankshaft bearing surface of a diesel engine are an indication of（）Acorrosion frettingBinsufficient lubricationCabnormal wearDfatigue failure
单选题The garboard strake is the（）.Araised flange at the main deck edgeBriveted crack arrester strap on all-welded shipsCriveting pattern most commonly used in ship constructionDrow of plating nearest the keel
单选题The lengthening of a crack formed in the shell plating of a ship may be prevented by （）.Awelding brackets across both ends of the crackBchipping out and slot welding the entire crackCdrilling a hole at each end of the crackDcutting a square notch at each end of the crack
单选题按裂缝的走向分类有（）三种。A沉陷裂缝、干缩裂缝、滑坡裂缝B表面裂缝、内部裂缝、冻胀裂缝C横向裂缝、纵向裂缝、龟纹裂缝D水平裂缝、垂直裂缝、交叉裂缝