开发方案的编制和实施是油田()的中心环节。
A、建设
B、开发
C、稳产
D、发展
参考答案:B
She didn’t come back to her hometown for five years and ______, she had got married and had a couple of kids.
A.to be honest
B.above all
C.on the other hand
D.in the meantime
消化性溃疡临床表现的特点是()
A.反酸嗳气
B.慢性周期性、节律性上腹疼痛
C.恶心、呕吐
D.上腹部局限性压痛
E.上腹部饱胀不适