如多乙苯塔进料中重组分增加，应及时减少塔顶采出，保证塔顶重组分不超标。（）
参考答案：对
Ann is always the last one _____ in her class.[ ]
A. to come school
B. come to school
C. to come to school
D. comes to school
一般采用以（）为基础的分类方法评估信贷资产质量。
A.信贷规模
B.风险状况
C.信用评级
D.信贷期限
