纯油基钻井完井液是一种无水相或含水量低于()的油基钻井液。
A.15%
B.5%
C.10%
D.20%
参考答案:B
(2013·新课标Ⅱ,14)It's an either—or situation—we can buy a new car this year or we can go on holiday but we can't do ________.
A.others
B.either
C.another
D.both
只有具备雄厚经济实力的人,才可以通过律师来维护自己的合法权利。[ ]