处理电泵井采油树大法兰钢圈刺漏时,应对()进行放空。
A、油管
B、套管
C、回油管线
D、掺水管线
参考答案:A
What a woman! I just wonder how she managed to keep smiling after all that she had ________.
A.set out
B.made up
C.gone through
D.turned down
末梢神经炎副作用主要见于()
A.异烟肼
B.吡嗪酰胺
C.利福喷汀
D.乙胺丁醇
E.丙硫异烟肼