- What's your favorite _____?
- The dog. [ ]
A. subject
B. animal
C.job
D. sport
答案:B
等高线分为几类?
井涌程序中起下钻井加值一般为()。
A、0.2-0.5kg/l
B、0.5-0.75kg/l
C、0.1-0.2kg/l