“能会精神于相与之际”一句中,“会”是()
A.会见
B.集中
C.一定
D.正好
参考答案:B
The twins are talking about the book Who Moved My Cheese. It's fun to ______. [ ]
A. join
B. join in
C. take part in
D. enter
在正常钻进时,钻井工程人员可以利用钻时判断()。
A.井斜情况
B.钻具刺漏情况
C.钻头使用情况
D.钻井液性能变化