干线型肝硬变(pipe stem cirrhosis)
干线型肝硬变(pipe stem cirrhosis)
相关考题:
对于STEM教育,以下选项中不正确的理解是()。 A、STEM教育强调全社会共同参与教育创新实践B、STEM教育强调跨学科C、STEM教育面向所有学生并培养综合素质D、STEM教育注重传统知识的灌输
A heavy,thick-walled tube,usually steel,used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a ______.A.heavy-walled drill pipeB.tool jointC.down hole toolD.drill collar
单选题The connected joints of pipe,usually made of three joints of pipe approximately 90 feet long,racked in the derrick when making a trip are called a().AstringBstandCjointDstandpipe
单选题A heavy,thick-walled tube,usually steel,used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a().Aheavy-walled drill pipeBtool jointCdown hole toolDdrill collar
单选题Which of the followings is not an indication of a bad maintenance?()Aa pipe with welded connectionsBa pipe with several clipsCa cement boxDa leaking valve
单选题In ship operations,hoisting and lowering pipe in and out of the drilled hole is the main function of the().AswivelBcathead spoolCdrawworksDstand pipe
单选题What is a spill pipe?()AA drainage pipe that carries rain or spray from an upper deck to a lower deckBA pipe under the anchor windlass leading to the chain lockerCA chute,usually over the stern,to lead dumped garbage clear of the hullDAn opening in the deck leading outside the hull
名词解释题干线型肝硬变(pipe stem cirrhosis)