某井油层中部深度2000m,测得地层静压30MPa,若附加量取15%,则应选用相对密度为()的压井液。
A、1.33
B、1.56
C、1.76
D、1.95
参考答案:C
-I don't know how to write the article assigned by our professor on international trade.
-You should have ______ your attention on the lecture that ______ how international situation affects
exports and imports across the globe. [ ]
A. put; concentrate on
B. paid; talked about
C. fixed; dealt on
D. focused; focused on
我们党坚持先进性和增强创造力的决定性因素是( )。
A.坚持群众路线
B.坚持党的基本路线和纲领
C.坚持党的思想路线,解放思想、实事求是、与时俱进
D.不断解放和发展社会生产力