钻遇潜山地层后,应()进行证实,以免因()造成判断失误。
参考答案:取心一筒;砾石
早期小细胞肺癌治疗选择()
A.化疗
B.放疗
C.化疗+放疗
D.手术+放疗
E.手术+化疗
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in().
A.generators
B.oil drums
C.the bridge controls
D.combustible metals