两栏式账簿，又称平行式账簿，是指将前后密切相关的经济业务登记在同一行上，以便检查每笔业务的发生和完成情况的账簿。（）
参考答案：错
吐温-80属哪种表面活性剂
A．阳离子型
B．阴离子型
C．两性离子型
D．非离子型
E．天然表面活性剂
He asked me_____ for the new skirt. [ ]
A. did I pay how much
B. I paid how much
C. how much I did pay
D. how much I paid
