【B11】
A. develops
B. selects
C. finds
D. reaches
【B10】
A. before
B. during
C. as
D. after
【B9】
A. For example
B. To some extent
C. As follows
D. In a sense
为避免对被检工件的腐蚀,对用于奥氏体不锈钢和钛合金材料的渗透探伤剂要求()
A. 蒸发后残渣中含氯量不超过0.1%
B. 蒸发后残渣中含氯量不超过1%
C. 蒸发后残渣中含硫量不超过0.1%
D. 蒸发后残渣中含硫量不超过1%