加强锅炉压力容器停用期间的维护保养，是为了防止设备表面产生＿。
A.裂纹
B.腐蚀
C.变形
D.磨损
参考答案：B
That's all for today. Now you go, or if you like you can stay here with us for dinner. [ ]
A. may
B. should
C. will
D. must
以教育产业、房地产产业等为依托的园区，主要能加快第几产业的步伐？
