当测井速度增加时,自然伽马曲线发生畸变,半幅点位置(),幅度()。
A.上移,提高
B.上移,降低
C.下移,提高
D.下移,降低
参考答案:B
The girl looked at me with a ____expression. Maybe the problem was quite ______.
A.puzzled; puzzling
B.puzzling; puzzled
C.puzzled; puzzled
D.puzzling; puzzling
切削平面,基面和主剖面三者的关系总是()的