套压监测仪表安装在(),既有套压表,也有套压传感器,能够实时远程采集套压数据。
A、放喷管汇上
B、节流管汇入口五通顶部
C、钻台下部
D、钻台立管上部
参考答案:B
15.-Tom, you've got an A in the final English exam. Congratulations!
-Thanks. But I never thought the result would come out so fast. The papers_____when I left the teacher's office just now.
A.were marking
B.were marked
C.were being marked
D.had been marked
适用于流速较大而水深为1.5~4m的围堰是( )。
A.竹、铅丝笼围堰B.钢板桩围堰C.套箱围堰D.双壁钢围堰