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【单选题】
声波测井主要分为（）两大类。A.
声速测声波时差测井
B.
声波幅度测声波频率测井
C.
声速测井和声幅测井
D.
声速测声波频率测井
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【简答题】单杆双作用气缸内径D=125 mm,活塞杆直径d=36 mm,工作压力p=0.5 MPa,气缸负载率为0.5, 求该气缸的拉力和推力各为多少?
【简答题】One day, Mr. White told the class that there would be a hobby show. It took all the students the whole morning to get ready for it. 1 , the laziest boy in the class. It was very difficult for the othe...
【单选题】– Who didn’t turn off the light after school yesterday? – It ______ be Lucy. She told me she was the last one to leave the classroom.
A.
must
B.
mustn't
C.
might
D.
can't
【单选题】毛泽东同志提出“中国革命斗争的胜利要靠中国同志了解中国情况”的文章是( )
A.
《中国的红色政权为什么能够存在？》
B.
《井冈山的斗争》
C.
《星星之火，可以燎原》
D.
《反对本本主义》
【单选题】Who told the school that Jane was not a liar?
A.
Helen Burns
B.
Miss Scatcherd
C.
Miss Temple
D.
Julia Severn
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