在钻井过程中,储层损害的两个主要因素是()。
A.压差和侵泡时间;
B.压差和钻井液类型;
C.钻井液粘度和侵泡时间;
D.环空流速和压差。
参考答案:A
―Do you have anything to do this afternoon?
―What’s up?
―Let’s go shopping. It’s said that Jinying Shop _____, and all the sweaters are sold at half price.
―Why not?
A.has closed down
B.was closing down
C.closes down
D.is closing down
企业年度财务报告的保管期限为( )。
A.5年
B.15年
C.25年
D.永久