题目:
板式塔发生的不正常操作主要有()。
A.严重漏夜
B.液泛
C.过量雾沫夹带
D.A、B、C均属不正常操作
答案:
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On December 8th, 2009, we had a big party to celebrate my grandmother's seventieth birthday. Weheld the party at my uncle's house and invited all the family and my...