气井测压力恢复曲线时,关井后连续记录井口压力和时间,点子先密后疏直到稳定为止,稳定标准是72h内压降不超过()%。 ["3","2","1","0.5"]
简述金属风管的制作工艺流程。
Which of the following statements is correct concerning the viscosity of lubricating oil?() ["Viscosity will increase as temperature increases","Viscosity is a measure of a fluid s internal resistance to flow","Viscosity will decrease as temperature decreases","Viscosity is not dependent on temperature"]
The master can refuse to()in the bill of lading the statements required by the Act if either he has reasonable grounds for suspecting that the information given by the shipper is inaccurate,or he has no reasonable means of checking it. ["inoculate","innovate","inordinate","incorporate"]
系统是由若干要素以一定()联结构成的具有某种()的有机整体。
在现代会展的运作过程中,如何建立品牌展会,目前说来主要有一下三种途径:()、()、()。