锅炉低温腐蚀是指受热面发生在()的腐蚀。
A.烟气侧
B.与A相反
C.A或B
D.停炉时
参考答案:A
When I got back home I saw a message pinned to the door, ________ “ Sorry to miss you; will call later.”
A.read
B.reads
C.to read
D.reading
表报记录提倡微机化管理,可实行微机化管理。不保存纸张记录。