《塔里木油田钻井井控实施细则》规定：泥浆工坐岗时发现溢流、井漏、钻井液性能变化及油气显示等异常情况，应立即报告钻井监督。
参考答案：错
Most of __________we call geniuses (天才)are successful only because they have made extraordinary efforts.
A．whom
B．who
C． what
D．which
浓硫酸是指浓度为（）的硫酸。
A.>50%
B.>65%
C.≥80%
D.≥75%
