用压力式液位计测量液位时，仪表安装高度与液位零位高度不一致时，需进行（）
参考答案：指示值的修正
When hanging off drill pipe in emergency situations aboard a ship，the preferred location of the drill bit is（）.
A.on bottom with the full drill string in tension
B.one stand (approximately 93 feet) off bottom
C.no deeper than the shoe of the last casing set
D.as close to the surface as possible
工程质量等级评定按（）、（）、（）和建设项目逐级进行。
