缩径卡钻一般发生在正常钻进过程中。
参考答案:错
解析:缩径卡钻一般发生在起下钻过程中。
I was afraid Mr. Lu would not accept my advice at the beginning. _______, he was quite pleased with it.
A.As a matter
B.As the matter of fact
C.As a fact
D. As a matter of fact
乾隆皇帝相对于前两任皇帝,治国宽严相济。